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 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



 NAME
      xterm - terminal emulator for X

 SYNOPSIS
      xterm [-toolkitoption ...] [-option ...] [shell]

 DESCRIPTION
      The xterm program is a terminal emulator for the X Window System.  It
      provides DEC VT102/VT220 and selected features from higher-level
      terminals such as VT320/VT420/VT520 (VTxxx).  It also provides
      Tektronix 4014 emulation for programs that cannot use the window
      system directly.  If the underlying operating system supports terminal
      resizing capabilities (for example, the SIGWINCH signal in systems
      derived from 4.3BSD), xterm will use the facilities to notify programs
      running in the window whenever it is resized.

      The VTxxx and Tektronix 4014 terminals each have their own window so
      that you can edit text in one and look at graphics in the other at the
      same time.  To maintain the correct aspect ratio (height/width),
      Tektronix graphics will be restricted to the largest box with a 4014's
      aspect ratio that will fit in the window.  This box is located in the
      upper left area of the window.

      Although both windows may be displayed at the same time, one of them
      is considered the ``active'' window for receiving keyboard input and
      terminal output.  This is the window that contains the text cursor.
      The active window can be chosen through escape sequences, the VT
      Options menu in the VTxxx window, and the Tek Options menu in the 4014
      window.

 EMULATIONS
      Xterm provides usable emulations of related DEC terminals:

      +   VT52 emulation is complete.

      +   VT102 emulation is fairly complete, but does not support
          autorepeat (because that would affect the keyboard used by other X
          clients).

          Double-size characters are displayed properly if your font server
          supports scalable fonts.

      +   VT220 emulation does not support soft fonts, it is otherwise
          complete.

      +   VT420 emulation (the default) supports controls for manipulating
          rectangles of characters as well as left/right margins.

          Xterm does not support some other features which are not suitable



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          for emulation, e.g., two-sessions.

      Terminal database (terminfo (5) or termcap (5)) entries that work with
      xterm include

           an optional platform-specific entry (``__default_termname__''),
           ``xterm'',
           ``vt102'',
           ``vt100'',
           ``ansi'' and
           ``dumb''

      Xterm automatically searches the terminal database in this order for
      these entries and then sets the ``TERM'' variable (and the ``TERMCAP''
      environment variable on a few older systems).  The alternatives after
      ``xterm'' are very old, from the late 1980s.

      VT100 and VT102 emulations are commonly equated, though they actually
      differ.  The VT102 provided controls for inserting and deleting lines.

      Similarly, ``ansi'' and ``vt100'' are often equated.  These are not
      really the same.  For instance, they use different controls for
      scrolling (but xterm supports both).  These features differ in an
      ``ansi'' terminal description from xterm:

      acsc
              Pseudo-graphics (line-drawing) uses a different mapping.

      xenl
              Xterm wraps text at the right margin using the VT100 ``newline
              glitch'' behavior.

      Because of the wrapping behavior, you would occasionally have to
      repaint the screen when using a text editor with the ``ansi''
      description.

      You may also use descriptions corresponding to the various supported
      emulations such as ``vt220'' or  ``vt420'', but should set the
      terminal emulation level with the decTerminalID resource.

      On most systems, xterm will use the terminfo database.  Some older
      systems use termcap.  (The ``TERMCAP'' environment variable is not set
      if xterm is linked against a terminfo library, since the requisite
      information is not provided by the termcap emulation of terminfo
      libraries).

      Many of the special xterm features may be modified under program
      control through a set of escape sequences different from the standard
      VTxxx escape sequences (see Xterm Control Sequences).



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      The Tektronix 4014 emulation is also fairly good.  It supports 12-bit
      graphics addressing, scaled to the window size.  Four different font
      sizes and five different lines types are supported.  There is no
      write-through or defocused mode support.  The Tektronix text and
      graphics commands are recorded internally by xterm and may be written
      to a file by sending the COPY escape sequence (or through the
      Tektronix menu; see below).  The name of the file will be

          ``COPYyyyy-MM-dd.hh:mm:ss''

      where yyyy, MM, dd, hh, mm and ss are the year, month, day, hour,
      minute and second when the COPY was performed (the file is created in
      the directory xterm is started in, or the home directory for a login
      xterm).

      Not all of the features described in this manual are necessarily
      available in this version of xterm.  Some (e.g., the non-VT220
      extensions) are available only if they were compiled in, though the
      most commonly-used are in the default configuration.

 OTHER FEATURES
      Xterm automatically highlights the text cursor when the pointer enters
      the window (selected) and unhighlights it when the pointer leaves the
      window (unselected).  If the window is the focus window, then the text
      cursor is highlighted no matter where the pointer is.

      In VTxxx mode, there are escape sequences to activate and deactivate
      an alternate screen buffer, which is the same size as the display area
      of the window.  When activated, the current screen is saved and
      replaced with the alternate screen.  Saving of lines scrolled off the
      top of the window is disabled until the normal screen is restored.
      The usual terminal description for xterm allows the visual editor
      vi(1) to switch to the alternate screen for editing and to restore the
      screen on exit.  A popup menu entry makes it simple to switch between
      the normal and alternate screens for cut and paste.

      In either VTxxx or Tektronix mode, there are escape sequences to
      change the name of the windows.  Additionally, in VTxxx mode, xterm
      implements the window-manipulation control sequences from dtterm, such
      as resizing the window, setting its location on the screen.

      Xterm allows character-based applications to receive mouse events
      (currently button-press and release events, and button-motion events)
      as keyboard control sequences.  See Xterm Control Sequences for
      details.

 OPTIONS
      Because xterm uses the X Toolkit library, it accepts the standard X
      Toolkit command line options.  Xterm also accepts many application-



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      specific options.

      By convention, if an option begins with a ``+'' instead of a ``-'',
      the option is restored to its default value.

      Most of the xterm options are actually parsed by the X Toolkit, which
      sets resource values, and overrides corresponding resource-settings in
      your X resource files.  Xterm provides the X Toolkit with a table of
      options.  A few of these are marked, telling the X Toolkit to ignore
      them (-help, -version, -class, -e, and -into).  After the X Toolkit
      has parsed the command-line parameters, it removes those which it
      handles, leaving the specially-marked parameters for xterm to handle.

      These options do not set a resource value, and are handled specially:

      -version
              This causes xterm to print a version number to the standard
              output, and then exit.

      -help   This causes xterm to print out a verbose message describing
              its options, one per line.  The message is written to the
              standard output.  After printing the message, xterm exits.
              Xterm generates this message, sorting it and noting whether a
              ``-option'' or a ``+option'' turns the feature on or off,
              since some features historically have been one or the other.
              Xterm generates a concise help message (multiple options per
              line) when an unknown option is used, e.g.,

                  xterm -z

              If the logic for a particular option such as logging is not
              compiled into xterm, the help text for that option also is not
              displayed by the -help option.

      The -version and -help options are interpreted even if xterm cannot
      open the display, and are useful for testing and configuration
      scripts.  Along with -class, they are checked before other options.
      To do this, xterm has its own (much simpler) argument parser, along
      with a table of the X Toolkit's built-in list of options.

      Relying upon the X Toolkit to parse the options and associated values
      has the advantages of simplicity and good integration with the X
      resource mechanism.  There are a few drawbacks

      +   Xterm cannot tell easily whether a resource value was set by one
          of the external resource- or application-defaults files, whether
          it was set using xrdb(1), or if it was set through the -xrm option
          or via some directly relevant command-line option.  Xterm sees
          only the end-result: a value supplied when creating its widgets.



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      +   Xterm does not know the order in which particular options and
          items in resource files are evaluated.  Rather, it sees all of the
          values for a given widget at the same time.  In the design of
          these options, some are deemed more important, and can override
          other options.

          The X Toolkit uses patterns (constants and wildcards) to match
          resources.  Once a particular pattern has been used, it will not
          modify it.  To override a given setting, a more-specific pattern
          must be used, e.g., replacing ``*'' with ``.''.  Some poorly-
          designed resource files are too specific to allow the command-line
          options to affect the relevant widget values.

      +   In a few cases, the X Toolkit combines its standard options in
          ways which do not work well with xterm.  This happens with the
          color (-fg, -bg) and reverse (-rv) options.  Xterm makes a special
          case of these and adjusts its sense of ``reverse'' to lessen user
          surprise.

      One parameter (after all options) may be given.  That overrides
      xterm's built-in choice of shell program:

      +   If the parameter is not a relative path, i.e., beginning with
          ``./'' or ``../'', xterm looks for the file in the user's PATH.
          In either case, this check fails if xterm cannot construct an
          absolute path.

      +   If that check fails (or if no such parameter is given), xterm next
          checks the ``SHELL'' variable.  If that specifies an executable
          file, xterm will attempt to start that.  However, xterm
          additionally checks if it is a valid shell, and will unset
          ``SHELL'' if it is not.

      +   If ``SHELL'' is not set to an executable file, xterm tries to use
          the shell program specified in the user's password file entry.  As
          before, xterm verifies if this is a valid shell.

      +   Finally, if the password file entry does not specify a valid
          shell, xterm uses /bin/sh.

      The -e option cannot be used with this parameter since it uses all
      parameters following the option.

      Xterm validates shell programs by finding their pathname in the text
      file /etc/shells.  It treats the environment variable ``SHELL''
      specially because (like ``TERM''), xterm both reads and updates the
      variable, and because the program started by xterm is not necessarily
      a shell.




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      The other options are used to control the appearance and behavior.
      Not all options are necessarily configured into your copy of xterm:

      -132    Normally, the VT102 DECCOLM escape sequence that switches
              between 80 and 132 column mode is ignored.  This option causes
              the DECCOLM escape sequence to be recognized, and the xterm
              window will resize appropriately.

      -ah     This option indicates that xterm should always highlight the
              text cursor.  By default, xterm will display a hollow text
              cursor whenever the focus is lost or the pointer leaves the
              window.

      +ah     This option indicates that xterm should do text cursor
              highlighting based on focus.

      -ai     This option disables active icon support if that feature was
              compiled into xterm.  This is equivalent to setting the vt100
              resource activeIcon to ``false''.

      +ai     This option enables active icon support if that feature was
              compiled into xterm.  This is equivalent to setting the vt100
              resource activeIcon to ``true''.

      -aw     This option indicates that auto-wraparound should be allowed,
              and is equivalent to setting the vt100 resource autoWrap to
              ``false''.

              Auto-wraparound allows the cursor to automatically wrap to the
              beginning of the next line when it is at the rightmost
              position of a line and text is output.

      +aw     This option indicates that auto-wraparound should not be
              allowed, and is equivalent to setting the vt100 resource
              autoWrap to ``false''.

      -b number
              This option specifies the size of the inner border (the
              distance between the outer edge of the characters and the
              window border) in pixels.  That is the vt100 internalBorder
              resource.  The default is ``2''.

      -baudrate number
              Set the line-speed, used to test the behavior of applications
              that use the line-speed when optimizing their output to the
              screen.  The default is ``38400''.

      +bc     turn off text cursor blinking.  This overrides the cursorBlink
              resource.



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      -bc     turn on text cursor blinking.  This overrides the cursorBlink
              resource.

      -bcf milliseconds
              set the amount of time text cursor is off when blinking via
              the cursorOffTime resource.

      -bcn milliseconds
              set the amount of time text cursor is on when blinking via the
              cursorOnTime resource.

      -bdc    Set the vt100 resource colorBDMode to ``false'', disabling the
              display of characters with bold attribute as color.

      +bdc    Set the vt100 resource colorBDMode to ``true'', enabling the
              display of characters with bold attribute as color rather than
              bold.

      -cb     Set the vt100 resource cutToBeginningOfLine to ``false''.

      +cb     Set the vt100 resource cutToBeginningOfLine to ``true''.

      -cc characterclassrange:value[, ...]
              This sets classes indicated by the given ranges for using in
              selecting by words (see CHARACTER CLASSES and the charClass
              resource).

      -cjk_width
              Set the cjkWidth resource to ``true''.  When turned on,
              characters with East Asian Ambiguous (A) category in UTR 11
              have a column width of 2.  Otherwise, they have a column width
              of 1.  This may be useful for some legacy CJK text terminal-
              based programs assuming box drawings and others to have a
              column width of 2.  It also should be turned on when you
              specify a TrueType CJK double-width (bi-width/monospace) font
              either with -fa at the command line or faceName resource.  The
              default is ``false''

      +cjk_width
              Reset the cjkWidth resource.

      -class string
              This option allows you to override xterm's resource class.
              Normally it is ``__default_class__'', but can be set to
              another class such as ``U__default_class__'' to override
              selected resources.

      -cm     This option disables recognition of ANSI color-change escape
              sequences.  It sets the colorMode resource to ``false''.



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      +cm     This option enables recognition of ANSI color-change escape
              sequences.  This is the same as the vt100 resource colorMode.

      -cn     This option indicates that newlines should not be cut in
              line-mode selections.  It sets the cutNewline resource to
              ``false''.

      +cn     This option indicates that newlines should be cut in line-mode
              selections.  It sets the cutNewline resource to ``true''.

      -cr color
              This option specifies the color to use for text cursor.  The
              default is to use the same foreground color that is used for
              text.  It sets the cursorColor resource according to the
              parameter.

      -cu     This option indicates that xterm should work around a bug in
              the more(1) program that causes it to incorrectly display
              lines that are exactly the width of the window and are
              followed by a line beginning with a tab (the leading tabs are
              not displayed).  This option is so named because it was
              originally thought to be a bug in the curses(3x) cursor motion
              package.

      +cu     This option indicates that xterm should not work around the
              more(1) bug mentioned above.

      -dc     This option disables the escape sequence to change dynamic
              colors: the vt100 foreground and background colors, its text
              cursor color, the pointer cursor foreground and background
              colors, the Tektronix emulator foreground and background
              colors, its text cursor color and highlight color.  The option
              sets the dynamicColors option to ``false''.

      +dc     This option enables the escape sequence to change dynamic
              colors.  The option sets the dynamicColors option to ``true''.

      -e program [ arguments ... ]
              This option specifies the program (and its command line
              arguments) to be run in the xterm window.  It also sets the
              window title and icon name to be the basename of the program
              being executed if neither -T nor -n are given on the command
              line.

              NOTE: This must be the last option on the command line.

      -en encoding
              This option determines the encoding on which xterm runs.  It
              sets the locale resource.  Encodings other than UTF-8 are



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              supported by using luit.  The -lc option should be used
              instead of -en for systems with locale support.

      -fb font
              This option specifies a font to be used when displaying bold
              text.  It sets the boldFont resource.

              This font must be the same height and width as the normal
              font, otherwise it is ignored.  If only one of the normal or
              bold fonts is specified, it will be used as the normal font
              and the bold font will be produced by overstriking this font.

              See also the discussion of boldMode and alwaysBoldMode
              resources.

      -fa pattern
              This option sets the pattern for fonts selected from the
              FreeType library if support for that library was compiled into
              xterm.  This corresponds to the faceName resource.  When a CJK
              double-width font is specified, you also need to turn on the
              cjkWidth resource.

              If you specify both -fa and the X Toolkit option -fn, the -fa
              setting overrides the latter.

              See also the renderFont resource, which combines with this to
              determine whether FreeType fonts are initially active.

      -fbb    This option indicates that xterm should compare normal and
              bold fonts bounding boxes to ensure they are compatible.  It
              sets the freeBoldBox resource to ``false''.

      +fbb    This option indicates that xterm should not compare normal and
              bold fonts bounding boxes to ensure they are compatible.  It
              sets the freeBoldBox resource to ``true''.

      -fbx    This option indicates that xterm should not assume that the
              normal and bold fonts have VT100 line-drawing characters.  If
              any are missing, xterm will draw the characters directly.  It
              sets the forceBoxChars resource to ``false''.

      +fbx    This option indicates that xterm should assume that the normal
              and bold fonts have VT100 line-drawing characters.  It sets
              the forceBoxChars resource to ``true''.

      -fd pattern
              This option sets the pattern for double-width fonts selected
              from the FreeType library if support for that library was
              compiled into xterm.  This corresponds to the



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              faceNameDoublesize resource.

      -fi font
              This option sets the font for active icons if that feature was
              compiled into xterm.

              See also the discussion of the iconFont resource.

      -fs size
              This option sets the pointsize for fonts selected from the
              FreeType library if support for that library was compiled into
              xterm.  This corresponds to the faceSize resource.

      -fullscreen
              This option indicates that xterm should ask the window manager
              to let it use the full-screen for display, e.g., without
              window decorations.  It sets the fullscreen resource to
              ``true''.

      +fullscreen
              This option indicates that xterm should not ask the window
              manager to let it use the full-screen for display.  It sets
              the fullscreen resource to ``false''.

      -fw font
              This option specifies the font to be used for displaying wide
              text.  By default, it will attempt to use a font twice as wide
              as the font that will be used to draw normal text.  If no
              double-width font is found, it will improvise, by stretching
              the normal font.  This corresponds to the wideFont resource.

      -fwb font
              This option specifies the font to be used for displaying bold
              wide text.  By default, it will attempt to use a font twice as
              wide as the font that will be used to draw bold text.  If no
              double-width font is found, it will improvise, by stretching
              the bold font.  This corresponds to the wideBoldFont resource.

      -fx font
              This option specifies the font to be used for displaying the
              preedit string in the ``OverTheSpot'' input method.

              See also the discussion of the ximFont resource.

      -hc color
              (see -selbg).

      -hf     This option indicates that HP function key escape codes should
              be generated for function keys.  It sets the hpFunctionKeys



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              resource to ``true''.

      +hf     This option indicates that HP function key escape codes should
              not be generated for function keys.  It sets the
              hpFunctionKeys resource to ``false''.

      -hm     Tells xterm to use highlightTextColor and highlightColor to
              override the reversed foreground/background colors in a
              selection.  It sets the highlightColorMode resource to
              ``true''.

      +hm     Tells xterm not to use highlightTextColor and highlightColor
              to override the reversed foreground/background colors in a
              selection.  It sets the highlightColorMode resource to
              ``false''.

      -hold   Turn on the hold resource, i.e., xterm will not immediately
              destroy its window when the shell command completes.  It will
              wait until you use the window manager to destroy/kill the
              window, or if you use the menu entries that send a signal,
              e.g., HUP or KILL.

      +hold   Turn off the hold resource, i.e., xterm will immediately
              destroy its window when the shell command completes.

      -ie     Turn on the ptyInitialErase resource, i.e., use the pseudo-
              terminal's sense of the stty erase value.

      +ie     Turn off the ptyInitialErase resource, i.e., set the stty
              erase value using the kb string from the termcap entry as a
              reference, if available.

      -im     Turn on the useInsertMode resource, which forces use of insert
              mode by adding appropriate entries to the TERMCAP environment
              variable.  (This option is ignored on most systems, because
              TERMCAP is not used).

      +im     Turn off the useInsertMode resource.

      -into windowId
              Given an X window identifier (an integer, which can be
              hexadecimal, octal or decimal according to whether it begins
              with "0x", "0" or neither), xterm will reparent its top-level
              shell widget to that window.  This is used to embed xterm
              within other applications.

              For instance, there are scripts for Tcl/Tk and Gtk which can
              be used to demonstrate the feature.  When using Gtk, there is
              a limitation of that toolkit which requires that xterm's



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              allowSendEvents resource is enabled.

      -itc    Set the vt100 resource colorITMode to ``false'', disabling the
              display of characters with italic attribute as color.

      +itc    Set the vt100 resource colorITMode to ``true'', enabling the
              display of characters with italic attribute as color rather
              than italic.

      -j      This option indicates that xterm should do jump scrolling.  It
              corresponds to the jumpScroll resource.  Normally, text is
              scrolled one line at a time; this option allows xterm to move
              multiple lines at a time so that it does not fall as far
              behind.  Its use is strongly recommended since it makes xterm
              much faster when scanning through large amounts of text.  The
              VT100 escape sequences for enabling and disabling smooth
              scroll as well as the VT Options menu can be used to turn this
              feature on or off.

      +j      This option indicates that xterm should not do jump scrolling.

      -k8     This option sets the allowC1Printable resource.  When
              allowC1Printable is set, xterm overrides the mapping of C1
              control characters (code 128159) to treat them as printable.

      +k8     This option resets the allowC1Printable resource.

      -kt keyboardtype
              This option sets the keyboardType resource.  Possible values
              include: ``unknown'', ``default'', ``legacy'', ``hp'',
              ``sco'', ``sun'', ``tcap'' and ``vt220''.

              The value ``unknown'', causes the corresponding resource to be
              ignored.

              The value ``default'', suppresses the associated resources

              hpFunctionKeys,
              scoFunctionKeys,
              sunFunctionKeys,
              tcapFunctionKeys,
              oldXtermFKeys and
              sunKeyboard,

              using the Sun/PC keyboard layout.

      -l      Turn logging on, unless disabled by the logInhibit resource.

              Some versions of xterm may have logging enabled.  However,



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              normally logging is not supported, due to security concerns in
              the early 1990s.  That was a problem in X11R4 xterm (1989)
              which was addressed by a patch to X11R5 late in 1993.  X11R6
              included these fixes.  The older version (when running with
              root privilege) would create the log-file using root
              privilege.  The reason why xterm ran with root privileges was
              to open pseudo-terminals.  Those privileges are now needed
              only on very old systems: Unix98 pseudo-terminals made the BSD
              scheme unnecessary.

              Unless overridden by the -lf option or the logFile resource:

              +   If the filename is ``-'', then logging is sent to the
                  standard output.

              +   Otherwise a filename is generated, and the logfile is
                  written to the directory from which xterm is invoked.

              +   The generated filename is of the form

                      XtermLog.XXXXXX

                  or

                      Xterm.log.hostname.yyyy.mm.dd.hh.mm.ss.XXXXXX

                  depending on how xterm was built.

      +l      Turn logging off.

      -lc     Turn on support of various encodings according to the users'
              locale setting, i.e., LC_ALL, LC_CTYPE, or LANG environment
              variables.  This is achieved by turning on UTF-8 mode and by
              invoking luit for conversion between locale encodings and
              UTF-8.  (luit is not invoked in UTF-8 locales.) This
              corresponds to the locale resource.

              The actual list of encodings which are supported is determined
              by luit.  Consult the luit manual page for further details.

              See also the discussion of the -u8 option which supports UTF-8
              locales.

      +lc     Turn off support of automatic selection of locale encodings.
              Conventional 8bit mode or, in UTF-8 locales or with -u8
              option, UTF-8 mode will be used.

      -lcc path
              File name for the encoding converter from/to locale encodings



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              and UTF-8 which is used with -lc option or locale resource.
              This corresponds to the localeFilter resource.

      -leftbar
              Force scrollbar to the left side of VT100 screen.  This is the
              default, unless you have set the rightScrollBar resource.

      -lf filename
              Specify the log-filename.  This sets the logFile resource.  If
              set to ``-'', xterm writes its log to the standard output.
              See the -l option.

      -ls     This option indicates that the shell that is started in the
              xterm window will be a login shell (i.e., the first character
              of argv[0] will be a dash, indicating to the shell that it
              should read the user's .login or .profile).

              The -ls flag and the loginShell resource are ignored if -e is
              also given, because xterm does not know how to make the shell
              start the given command after whatever it does when it is a
              login shell - the user's shell of choice need not be a Bourne
              shell after all.  Also, xterm -e is supposed to provide a
              consistent functionality for other applications that need to
              start text-mode programs in a window, and if loginShell were
              not ignored, the result of ~/.profile might interfere with
              that.

              If you do want the effect of -ls and -e simultaneously, you
              may get away with something like

                  xterm -e /bin/bash -l -c "my command here"

              Finally, -ls is not completely ignored, because xterm -ls -e
              does write a /etc/wtmp entry (if configured to do so), whereas
              xterm -e does not.

      -maximized
              This option indicates that xterm should ask the window manager
              to maximize its layout on startup.  This corresponds to the
              maximized resource.

              Maximizing is not the reverse of iconifying; it is possible to
              do both with certain window managers.

      +maximized
              This option indicates that xterm should ask the window manager
              to not maximize its layout on startup.

      +ls     This option indicates that the shell that is started should



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                                __app_date__



              not be a login shell (i.e., it will be a normal ``subshell'').

      -mb     This option indicates that xterm should ring a margin bell
              when the user types near the right end of a line.

      +mb     This option indicates that margin bell should not be rung.

      -mc milliseconds
              This option specifies the maximum time between multi-click
              selections.

      -mesg   Turn off the messages resource, i.e., disallow write access to
              the terminal.

      +mesg   Turn on the messages resource, i.e., allow write access to the
              terminal.

      -mk_width
              Set the mkWidth resource to ``true''.  This makes xterm use a
              built-in version of the wide-character width calculation.  The
              default is ``false''

      +mk_width
              Reset the mkWidth resource.

      -ms color
              This option specifies the color to be used for the pointer
              cursor.  The default is to use the foreground color.  This
              sets the pointerColor resource.

      -nb number
              This option specifies the number of characters from the right
              end of a line at which the margin bell, if enabled, will ring.
              The default is ``10''.

      -nul    This option disables the display of underlining.

      +nul    This option enables the display of underlining.

      -pc     This option enables the PC-style use of bold colors (see
              boldColors resource).

      +pc     This option disables the PC-style use of bold colors.

      -pob    This option indicates that the window should be raised
              whenever a Control-G is received.

      +pob    This option indicates that the window should not be raised
              whenever a Control-G is received.



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                                __app_date__



      -report-charclass
              Print a report to the standard output showing information
              about the character-classes which can be altered using the
              charClass resource.

      -report-colors
              Print a report to the standard output showing information
              about colors as xterm allocates them.  This corresponds to the
              reportColors resource.

      -report-fonts
              Print a report to the standard output showing information
              about fonts which are loaded.  This corresponds to the
              reportFonts resource.

      -report-icons
              Print a report to the standard output showing information
              about pixmap-icons which are loaded.  This corresponds to the
              reportIcons resource.

      -rightbar
              Force scrollbar to the right side of VT100 screen.

      -rvc    This option disables the display of characters with reverse
              attribute as color.

      +rvc    This option enables the display of characters with reverse
              attribute as color.

      -rw     This option indicates that reverse-wraparound should be
              allowed.  This allows the cursor to back up from the leftmost
              column of one line to the rightmost column of the previous
              line.  This is very useful for editing long shell command
              lines and is encouraged.  This option can be turned on and off
              from the VT Options menu.

      +rw     This option indicates that reverse-wraparound should not be
              allowed.

      -s      This option indicates that xterm may scroll asynchronously,
              meaning that the screen does not have to be kept completely up
              to date while scrolling.  This allows xterm to run faster when
              network latencies are very high and is typically useful when
              running across a very large internet or many gateways.

      +s      This option indicates that xterm should scroll synchronously.

      -samename
              Does not send title and icon name change requests when the



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                                __app_date__



              request would have no effect: the name is not changed.  This
              has the advantage of preventing flicker and the disadvantage
              of requiring an extra round trip to the server to find out the
              previous value.  In practice this should never be a problem.

      +samename
              Always send title and icon name change requests.

      -sb     This option indicates that some number of lines that are
              scrolled off the top of the window should be saved and that a
              scrollbar should be displayed so that those lines can be
              viewed.  This option may be turned on and off from the VT
              Options menu.

      +sb     This option indicates that a scrollbar should not be
              displayed.

      -selbg color
              This option specifies the color to use for the background of
              selected text.  If not specified, reverse video is used.  See
              the discussion of the highlightColor resource.

      -selfg color
              This option specifies the color to use for selected text.  If
              not specified, reverse video is used.  See the discussion of
              the highlightTextColor resource.

      -sf     This option indicates that Sun function key escape codes
              should be generated for function keys.

      +sf     This option indicates that the standard escape codes should be
              generated for function keys.

      -sh number
              scale line-height values by the given number.  See the
              discussion of the scaleHeight resource.

      -si     This option indicates that output to a window should not
              automatically reposition the screen to the bottom of the
              scrolling region.  This option can be turned on and off from
              the VT Options menu.

      +si     This option indicates that output to a window should cause it
              to scroll to the bottom.

      -sk     This option indicates that pressing a key while using the
              scrollbar to review previous lines of text should cause the
              window to be repositioned automatically in the normal position
              at the bottom of the scroll region.



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      +sk     This option indicates that pressing a key while using the
              scrollbar should not cause the window to be repositioned.

      -sl number
              This option specifies the number of lines to save that have
              been scrolled off the top of the screen.  This corresponds to
              the saveLines resource.  The default is ``64''.

      -sm     This option, corresponding to the sessionMgt resource,
              indicates that xterm should set up session manager callbacks.

      +sm     This option indicates that xterm should not set up session
              manager callbacks.

      -sp     This option indicates that Sun/PC keyboard should be assumed,
              providing mapping for keypad ``+'' to ``,'', and CTRL-F1 to
              F13, CTRL-F2 to F14, etc.

      +sp     This option indicates that the standard escape codes should be
              generated for keypad and function keys.

      -t      This option indicates that xterm should start in Tektronix
              mode, rather than in VTxxx mode.  Switching between the two
              windows is done using the ``Options'' menus.

              Terminal database (terminfo (5) or termcap (5)) entries that
              work with xterm are:

              ``tek4014'',
              ``tek4015'',
              ``tek4012'',
              ``tek4013'',
              ``tek4010'', and
              ``dumb''.

              xterm automatically searches the terminal database in this
              order for these entries and then sets the ``TERM'' variable
              (and the ``TERMCAP'' environment variable, if relevant).

      +t      This option indicates that xterm should start in VTxxx mode.

      -tb     This option, corresponding to the toolBar resource, indicates
              that xterm should display a toolbar (or menubar) at the top of
              its window.  The buttons in the toolbar correspond to the
              popup menus, e.g., control/left/mouse for Main Options.

      +tb     This option indicates that xterm should not set up a toolbar.

      -ti term_id



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                                __app_date__



              Specify the name used by xterm to select the correct response
              to terminal ID queries.  It also specifies the emulation
              level, used to determine the type of response to a DA control
              sequence.  Valid values include vt52, vt100, vt101, vt102,
              vt220, and vt240 (the ``vt'' is optional).  The default is
              ``vt__default_termid__''.  The term_id argument specifies the
              terminal ID to use.  (This is the same as the decTerminalID
              resource).

      -tm string
              This option specifies a series of terminal setting keywords
              followed by the characters that should be bound to those
              functions, similar to the stty program.  The keywords and
              their values are described in detail in the ttyModes resource.

      -tn name
              This option specifies the name of the terminal type to be set
              in the TERM environment variable.  It corresponds to the
              termName resource.  This terminal type must exist in the
              terminal database (termcap or terminfo, depending on how xterm
              is built) and should have li# and co# entries.  If the
              terminal type is not found, xterm uses the built-in list
              ``xterm'', ``vt102'', etc.

      -u8     This option sets the utf8 resource.  When utf8 is set, xterm
              interprets incoming data as UTF-8.  This sets the wideChars
              resource as a side-effect, but the UTF-8 mode set by this
              option prevents it from being turned off.  If you must turn
              UTF-8 encoding on and off, use the -wc option or the
              corresponding wideChars resource, rather than the -u8 option.

              This option and the utf8 resource are overridden by the -lc
              and -en options and locale resource.  That is, if xterm has
              been compiled to support luit, and the locale resource is not
              ``false'' this option is ignored.  We recommend using the -lc
              option or the ``locale: true'' resource in UTF-8 locales when
              your operating system supports locale, or -en UTF-8 option or
              the ``locale: UTF-8'' resource when your operating system does
              not support locale.

      +u8     This option resets the utf8 resource.

      -uc     This option makes the cursor underlined instead of a box.

      +uc     This option makes the cursor a box instead of underlined.

      -ulc    This option disables the display of characters with underline
              attribute as color rather than with underlining.




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                                __app_date__



      +ulc    This option enables the display of characters with underline
              attribute as color rather than with underlining.

      -ulit   This option, corresponding to the italicULMode resource,
              disables the display of characters with underline attribute as
              italics rather than with underlining.

      +ulit   This option, corresponding to the italicULMode resource,
              enables the display of characters with underline attribute as
              italics rather than with underlining.

      -ut     This option indicates that xterm should not write a record
              into the system utmp log file.

      +ut     This option indicates that xterm should write a record into
              the system utmp log file.

      -vb     This option indicates that a visual bell is preferred over an
              audible one.  Instead of ringing the terminal bell whenever a
              Control-G is received, the window will be flashed.

      +vb     This option indicates that a visual bell should not be used.

      -wc     This option sets the wideChars resource.

              When wideChars is set, xterm maintains internal structures for
              16-bit characters.  If xterm is not started in UTF-8 mode (or
              if this resource is not set), initially it maintains those
              structures to support 8-bit characters.  Xterm can later be
              switched, using a menu entry or control sequence, causing it
              to reallocate those structures to support 16-bit characters.

              The default is ``false''.

      +wc     This option resets the wideChars resource.

      -wf     This option indicates that xterm should wait for the window to
              be mapped the first time before starting the subprocess so
              that the initial terminal size settings and environment
              variables are correct.  It is the application's responsibility
              to catch subsequent terminal size changes.

      +wf     This option indicates that xterm should not wait before
              starting the subprocess.

      -ziconbeep percent
              Same as zIconBeep resource.  If percent is non-zero, xterms
              that produce output while iconified will cause an XBell sound
              at the given volume and have ``***'' prepended to their icon



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                                __app_date__



              titles.  Most window managers will detect this change
              immediately, showing you which window has the output.  (A
              similar feature was in x10 xterm.)

      -C      This option indicates that this window should receive console
              output.  This is not supported on all systems.  To obtain
              console output, you must be the owner of the console device,
              and you must have read and write permission for it.  If you
              are running X under xdm on the console screen you may need to
              have the session startup and reset programs explicitly change
              the ownership of the console device in order to get this
              option to work.

      -Sccn   This option allows xterm to be used as an input and output
              channel for an existing program and is sometimes used in
              specialized applications.  The option value specifies the last
              few letters of the name of a pseudo-terminal to use in slave
              mode, plus the number of the inherited file descriptor.  If
              the option contains a ``/'' character, that delimits the
              characters used for the pseudo-terminal name from the file
              descriptor.  Otherwise, exactly two characters are used from
              the option for the pseudo-terminal name, the remainder is the
              file descriptor.  Examples (the first two are equivalent since
              the descriptor follows the last ``/''):

                  -S/dev/pts/123/45
                  -S123/45
                  -Sab34

              Note that xterm does not close any file descriptor which it
              did not open for its own use.  It is possible (though probably
              not portable) to have an application which passes an open file
              descriptor down to xterm past the initialization or the -S
              option to a process running in the xterm.

    Old Options
      The following command line arguments are provided for compatibility
      with older versions.  They may not be supported in the next release as
      the X Toolkit provides standard options that accomplish the same task.

      %geom   This option specifies the preferred size and position of the
              Tektronix window.  It is shorthand for specifying the
              ``tekGeometry'' resource.

      #geom   This option specifies the preferred position of the icon
              window.  It is shorthand for specifying the ``iconGeometry''
              resource.

      -T string



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                                __app_date__



              This option specifies the title for xterm's windows.  It is
              equivalent to -title.

      -n string
              This option specifies the icon name for xterm's windows.  It
              is shorthand for specifying the ``iconName'' resource.  Note
              that this is not the same as the toolkit option -name.  The
              default icon name is the application name.

              If no suitable icon is found, xterm provides a compiled-in
              pixmap.

      -r      This option indicates that reverse video should be simulated
              by swapping the foreground and background colors.  It is
              equivalent to -rv.

      -w number
              This option specifies the width in pixels of the border
              surrounding the window.  It is equivalent to -borderwidth or
              -bw.

    X Toolkit Options
      The following standard X Toolkit command line arguments are commonly
      used with xterm:

      -bd color
              This option specifies the color to use for the border of the
              window.  The corresponding resource name is borderColor.
              Xterm uses the X Toolkit default, which is
              ``XtDefaultForeground''.

              Xterm's VT100 window has two borders: the inner border
              internalBorder and the outer border borderWidth, managed by
              the X Toolkit.

              Normally xterm fills the inner border using the VT100 window's
              background color.  If the colorInnerBorder resource is
              enabled, then xterm may fill the inner border using the
              borderColor resource.

      -bg color
              This option specifies the color to use for the background of
              the window.  The corresponding resource name is background.
              The default is ``XtDefaultBackground''.

      -bw number
              This option specifies the width in pixels of the border
              surrounding the window.




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                                __app_date__



              This appears to be a legacy of older X releases.  It sets the
              borderWidth resource of the shell widget, and may provide
              advice to your window manager to set the thickness of the
              window frame.  Most window managers do not use this
              information.  See the -b option, which controls the inner
              border of the xterm window.

      -display display
              This option specifies the X server to contact; see
              X(__miscmansuffix__).

      -fg color
              This option specifies the color to use for displaying text.
              The corresponding resource name is foreground.  The default is
              ``XtDefaultForeground''.

      -fn font
              This option specifies the font to be used for displaying
              normal text.  The corresponding resource name is font.  The
              resource value default is fixed.

      -font font
              This is the same as -fn.

      -geometry geometry
              This option specifies the preferred size and position of the
              VTxxx window; see X(__miscmansuffix__).

              The normal geometry specification can be suffixed with @
              followed by a Xinerama screen specification; it can be either
              g for the global screen (default), c for the current screen or
              a screen number.

      -iconic
              This option indicates that xterm should ask the window manager
              to start it as an icon rather than as the normal window.  The
              corresponding resource name is iconic.

      -name name
              This option specifies the application name under which
              resources are to be obtained, rather than the default
              executable file name.  Name should not contain ``.'' or ``*''
              characters.

      -rv     This option indicates that reverse video should be simulated
              by swapping the foreground and background colors.  The
              corresponding resource name is reverseVideo.

      +rv     Disable the simulation of reverse video by swapping foreground



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                                __app_date__



              and background colors.

      -title string
              This option specifies the window title string, which may be
              displayed by window managers if the user so chooses.  The
              default title is the command line specified after the -e
              option, if any, otherwise the application name.

      -xrm resourcestring
              This option specifies a resource string to be used.  This is
              especially useful for setting resources that do not have
              separate command line options.

      X Toolkit accepts alternate names for a few of these options, e.g.,

      +   ``-background'' for ``-bg''

      +   ``-font'' for ``-fn''

      +   ``-foreground'' for ``-fg''

      Abbreviated options also are supported, e.g., ``-v'' for ``-verbose.''

 RESOURCES
      Xterm understands all of the core X Toolkit resource names and
      classes.  Application specific resources (e.g.,
      ``__default_class__.NAME'') follow:

    Application Resources
      backarrowKeyIsErase (class BackarrowKeyIsErase)
              Tie the VTxxx backarrowKey and ptyInitialErase resources
              together by setting the DECBKM state according to whether the
              initial erase character is a backspace (8) or delete (127)
              character.  A ``false'' value disables this feature.  The
              default is ``__backarrow_is_erase__''.

              Here are tables showing how the initial settings for

              +   backarrowKeyIsErase (BKIE),

              +   backarrowKey (BK), and

              +   ptyInitialErase (PIE), along with the

              +   stty erase character (^H for backspace, ^? for delete)

              will affect DECBKM.  First, xterm obtains the initial erase
              character:




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                                __app_date__



              +   xterm's internal value is ^H

              +   xterm asks the operating system for the value which stty
                  shows

              +   the ttyModes resource may override erase

              +   if ptyInitialErase is false, xterm will look in the
                  terminal database

              Summarizing that as a table: l l l l _ _ _ _ l c c c.
              PIE  stty termcap   erase false     ^H   ^H   ^H
              false     ^H   ^?   ^?  false     ^?   ^H   ^H
              false     ^?   ^?   ^?  true ^H   ^H   ^H true ^H   ^?   ^H
              true ^?   ^H   ^?  true ^?   ^?   ^?

              Using that erase character, xterm allows further choices:

              +   if backarrowKeyIsErase is true, xterm uses the erase
                  character for the initial state of DECBKM

              +   if backarrowKeyIsErase is false, xterm sets DECBKM to 2
                  (internal).  This ties together backarrowKey and the
                  control sequence for DECBKM.

              +   applications can send a control sequence to set/reset
                  DECBKM control set

              +   the ``Backarrow Key (BS/DEL)'' menu entry toggles DECBKM

              Summarizing the initialization details: l l l l l _ _ _ _ _ c
              l l c c.  erase     BKIE BK   DECBKM    result
              ^?   false     false     2    ^H ^?   false     true 2    ^?
              ^?   true false     0    ^?  ^?   true true 1    ^?
              ^H   false     false     2    ^H ^H   false     true 2    ^?
              ^H   true false     0    ^H ^H   true true 1    ^H

      fullscreen (class Fullscreen)
              Specifies whether or not xterm should ask the window manager
              to use a fullscreen layout on startup.  Xterm accepts either a
              keyword (ignoring case) or the number shown in parentheses:

              false (0)
                 Fullscreen layout is not used initially, but may be later
                 via menu-selection or control sequence.

              true (1)
                 Fullscreen layout is used initially, but may be disabled
                 later via menu-selection or control sequence.



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                                __app_date__



              always (2)
                 Fullscreen layout is used initially, and cannot be disabled
                 later via menu-selection or control sequence.

              never (3)
                 Fullscreen layout is not used, and cannot be enabled later
                 via menu-selection or control sequence.

              The default is ``false''.

      hold (class Hold)
              If true, xterm will not immediately destroy its window when
              the shell command completes.  It will wait until you use the
              window manager to destroy/kill the window, or if you use the
              menu entries that send a signal, e.g., HUP or KILL.  You may
              scroll back, select text, etc., to perform most graphical
              operations.  Resizing the display will lose data, however,
              since this involves interaction with the shell which is no
              longer running.

      hpFunctionKeys (class HpFunctionKeys)
              Specifies whether or not HP function key escape codes should
              be generated for function keys.  The default is ``false'',
              i.e., this feature is disabled.

              The keyboardType resource is the preferred mechanism for
              selecting this mode.

      iconGeometry (class IconGeometry)
              Specifies the preferred size and position of the application
              when iconified.  It is not necessarily obeyed by all window
              managers.

      iconHint (class IconHint)
              Specifies an icon which will be added to the window manager
              hints.  Xterm provides no default value.

              Set this resource to ``none'' to omit the hint entirely, using
              whatever the window manager may decide.

              If the iconHint resource is given (or is set via the -n
              option) xterm searches for a pixmap file with that name, in
              the current directory as well as in __pixmapsdir__.  if the
              resource does not specify an absolute pathname.  In each case,
              xterm adds ``_48x48'' and/or ``.xpm'' to the filename after
              trying without those suffixes.  If it is able to load the
              file, xterm sets the window manager hint for the icon-pixmap.
              These pixmaps are distributed with xterm, and can optionally
              be compiled-in:



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                                __app_date__



              +   mini.xterm_16x16, mini.xterm_32x32, mini.xterm_48x48

              +   filled-xterm_16x16, filled-xterm_32x32, filled-xterm_48x48

              +   xterm_16x16, xterm_32x32, xterm_48x48

              +   xterm-color_16x16, xterm-color_32x32, xterm-color_48x48

              In either case, xterm allows for adding a ``_48x48'' to
              specify the largest of the pixmaps as a default.  That is,
              ``mini.xterm'' is the same as ``mini.xterm_48x48''.

              If no explicit iconHint resource is given (or if none of the
              compiled-in names matches), xterm uses ``mini.xterm'' (which
              is always compiled-in).

              The iconHint resource has no effect on ``desktop'' files,
              including ``panel'' and ``menu''.  Those are typically set via
              a ``.desktop'' file; xterm provides samples for itself (and
              the uxterm script).  The more capable desktop systems allow
              changing the icon on a per-user basis.

      iconName (class IconName)
              Specifies a label for xterm when iconified.  Xterm provides no
              default value; some window managers may assume the application
              name, e.g., ``xterm''.

              Setting the iconName resource sets the icon label unless
              overridden by zIconBeep or the control sequences which change
              the window and icon labels.

      keyboardType (class KeyboardType)
              Enables one (or none) of the various keyboard-type resources:
              hpFunctionKeys, scoFunctionKeys, sunFunctionKeys,
              tcapFunctionKeys, oldXtermFKeys and sunKeyboard.

              The resource's value should be one of the corresponding
              strings ``hp'', ``sco'', ``sun'', ``tcap'', ``legacy'' or
              ``vt220'', respectively.

              The individual resources are provided for legacy support; this
              resource is simpler to use.  Xterm will use only one
              keyboard-type, but if multiple resources are set, it warns and
              uses the last one it checks.

              The default is ``unknown'', i.e., none of the associated
              resources are set via this resource.

      maxBufSize (class MaxBufSize)



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                                __app_date__



              Specify the maximum size of the input buffer.  The default is
              ``32768''.  You cannot set this to a value less than the
              minBufSize resource.  It will be increased as needed to make
              that value evenly divide this one.

              On some systems you may want to increase one or both of the
              maxBufSize and minBufSize resource values to achieve better
              performance if the operating system prefers larger buffer
              sizes.

      maximized (class Maximized)
              Specifies whether or not xterm should ask the window manager
              to maximize its layout on startup.  The default is ``false''.

      menuHeight (class MenuHeight)
              Specifies the height of the toolbar, which may be increased by
              the X toolkit layout widget depending upon the fontsize used.
              The default is ``25''.

      messages (class Messages)
              Specifies whether write access to the terminal is allowed
              initially.  See mesg(1).  The default is ``true''.

      menuLocale (class MenuLocale)
              Specify the locale used for character-set computations when
              loading the popup menus.  Use this to improve initialization
              performance of the Athena popup menus, which may load
              unnecessary (and very large) fonts, e.g., in a locale having
              UTF-8 encoding.  The default is ``C'' (POSIX).

              To use the current locale (only useful if you have localized
              the resource settings for the menu entries), set the resource
              to an empty string.

      minBufSize (class MinBufSize)
              Specify the minimum size of the input buffer, i.e., the amount
              of data that xterm requests on each read.  The default is
              ``4096''.  You cannot set this to a value less than 64.

      omitTranslation (class OmitTranslation)
              Selectively omit one or more parts of xterm's default
              translations at startup.  The resource value is a comma-
              separated list of keywords, which may be abbreviated:

              default
                   ignore (mouse) button-down events which were not handled
                   by other translations

              fullscreen



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                                __app_date__



                   assigns a key-binding to the fullscreen() action.

              keypress
                   assigns keypresses by default to the insert-seven-bit()
                   and insert-eight-bit() actions.

              paging
                   assigns key bindings to the scroll-back() and scroll-
                   forw() actions.

              popup-menu
                   assigns mouse-buttons with the control modifier to the
                   popup-menus.

              reset
                   assigns mouse-button 2 with the meta modifier to the
                   clear-saved-lines action.

              scroll-lock
                   assigns a key-binding to the scroll-lock() action.

              select
                   assigns mouse- and keypress-combinations to actions which
                   manipulate the selection.

              shift-fonts
                   assigns key-bindings to larger-vt-font() and smaller-vt-
                   font() actions.

              wheel-mouse
                   assigns buttons 4 and 5 with different modifiers to the
                   scroll-back() and scroll-forw() actions.

      ptyHandshake (class PtyHandshake)
              If ``true'', xterm will perform handshaking during
              initialization to ensure that the parent and child processes
              update the utmp and stty state.

              See also waitForMap which waits for the pseudo-terminal's
              notion of the screen size, and ptySttySize which resets the
              screen size after other terminal initialization is complete.
              The default is ``true''.

      ptyInitialErase (class PtyInitialErase)
              If ``true'', xterm will use the pseudo-terminal's sense of the
              stty erase value.  If ``false'', xterm will set the stty erase
              value to match its own configuration, using the kb string from
              the termcap entry as a reference, if available.




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                                __app_date__



              In either case, the result is applied to the TERMCAP variable
              which xterm sets, if the system uses TERMCAP.

              See also the ttyModes resource, which may override this.  The
              default is ``__initial_erase__''.

      ptySttySize (class PtySttySize)
              If ``true'', xterm will reset the screen size after terminal
              initialization is complete.  This is needed for some systems
              whose pseudo-terminals cannot propagate terminal
              characteristics.  Where it is not needed, it can interfere
              with other methods for setting the initial screen size, e.g.,
              via window manager interaction.

              See also waitForMap which waits for a handshake-message giving
              the pseudo-terminal's notion of the screen size.  The default
              is ``false'' on Linux and OS X systems, ``true'' otherwise.

      reportColors (class ReportColors)
              If true, xterm will print to the standard output a summary of
              colors as it allocates them.  The default is ``false''.

      reportFonts (class ReportFonts)
              If true, xterm will print to the standard output a summary of
              each font's metrics (size, number of glyphs, etc.), as it
              loads them.  The default is ``false''.

      reportIcons (class ReportIcons)
              If true, xterm will print to the standard output a summary of
              each pixmap icon as it loads them.  The default is ``false''.

      sameName (class SameName)
              If the value of this resource is ``true'', xterm does not send
              title and icon name change requests when the request would
              have no effect: the name is not changed.  This has the
              advantage of preventing flicker and the disadvantage of
              requiring an extra round trip to the server to find out the
              previous value.  In practice this should never be a problem.
              The default is ``true''.

      scaleHeight (class ScaleHeight)
              Scale line-height values by the resource value, which is
              limited to ``0.9'' to ``1.5''.  The default value is ``1.0'',

              While this resource applies to either bitmap or TrueType
              fonts, its main purpose is to help work around incompatible
              changes in the Xft library's font metrics.  Xterm checks the
              font metrics to find what the library claims are the bounding
              boxes for each glyph (character).  However, some of Xft's



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                                __app_date__



              features (such as the autohinter) can cause the glyphs to be
              scaled larger than the bounding boxes, and be partly
              overwritten by the next row.

              See useClipping for a related resource.

      scoFunctionKeys (class ScoFunctionKeys)
              Specifies whether or not SCO function key escape codes should
              be generated for function keys.  The default is ``false'',
              i.e., this feature is disabled.

              The keyboardType resource is the preferred mechanism for
              selecting this mode.

      sessionMgt (class SessionMgt)
              If the value of this resource is ``true'', xterm sets up
              session manager callbacks for XtNdieCallback and
              XtNsaveCallback.  The default is ``true''.

      sunFunctionKeys (class SunFunctionKeys)
              Specifies whether or not Sun function key escape codes should
              be generated for function keys.  The default is ``false'',
              i.e., this feature is disabled.

              The keyboardType resource is the preferred mechanism for
              selecting this mode.

      sunKeyboard (class SunKeyboard)
              Xterm translates certain key symbols based on its assumptions
              about your keyboard.  This resource specifies whether or not
              Sun/PC keyboard layout (i.e., the PC keyboard's numeric keypad
              together with 12 function keys) should be assumed rather than
              DEC VT220.  This causes the keypad ``+'' to be mapped to
              ``,''.  and CTRL F1-F10 to F11-F20, depending on the setting
              of the ctrlFKeys resource, so xterm emulates a DEC VT220 more
              accurately.  Otherwise (the default, with sunKeyboard set to
              ``false''), xterm uses PC-style bindings for the function keys
              and keypad.

              PC-style bindings use the Shift, Alt, Control and Meta keys as
              modifiers for function-keys and keypad (see Xterm Control
              Sequences for details).  The PC-style bindings are analogous
              to PCTerm, but not the same thing.  Normally these bindings do
              not conflict with the use of the Meta key as described for the
              eightBitInput resource.  If they do, note that the PC-style
              bindings are evaluated first.

              See also the keyboardType resource.




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                                __app_date__



      tcapFunctionKeys (class TcapFunctionKeys)
              Specifies whether or not function key escape codes read from
              the termcap/terminfo entry corresponding to the TERM
              environment variable should be generated for function keys
              instead of those configured using sunKeyboard and
              keyboardType.  The default is ``false'', i.e., this feature is
              disabled.

              The keyboardType resource is the preferred mechanism for
              selecting this mode.

      termName (class TermName)
              Specifies the terminal type name to be set in the TERM
              environment variable.

      title (class Title)
              Specifies a string that may be used by the window manager when
              displaying this application.

      toolBar (class ToolBar)
              Specifies whether or not the toolbar should be displayed.  The
              default is ``true''.

      ttyModes (class TtyModes)
              Specifies a string containing terminal setting keywords.
              Except where noted, they may be bound to characters.  Other
              keywords set modes.  Not all keywords are supported on a given
              system.  Allowable keywords include: l l l _ _ _ l l l.
              Keyword   POSIX?    Notes brk  no   T{ CHAR may send an
              ``interrupt'' signal, as well as ending the input-line.  T}
              dsusp     no   T{ CHAR will send a terminal ``stop'' signal
              after input is flushed.  T} eof  yes  T{ CHAR will terminate
              input (i.e., an end of file).  T} eol  yes  CHAR will end the
              line.  eol2 no   alternate CHAR for ending the line.
              erase     yes  CHAR will erase the last character typed.
              erase2    no   T{ alternate CHAR for erasing the last input-
              character.  T} flush     no   T{ CHAR will cause output to be
              discarded until another flush character is typed.  T}
              intr yes  CHAR will send an ``interrupt'' signal.
              kill yes  CHAR will erase the current line.
              lnext     no   CHAR will enter the next character quoted.
              quit yes  CHAR will send a ``quit'' signal.
              rprnt     no   CHAR will redraw the current line.
              start     yes  T{ CHAR will restart the output after stopping
              it.  T} status    no   T{ CHAR will cause a system-generated
              status line to be printed.  T} stop yes  CHAR will stop the
              output.  susp yes  CHAR will send a terminal ``stop'' signal
              swtch     no   CHAR will switch to a different shell layer.
              tabs yes  Mode disables tab-expansion.  -tabs     yes  Mode



                                   - 32 -       Formatted:  October 24, 2018






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                                __app_date__



              enables tab-expansion.  weras     no   CHAR will erase the
              last word typed.

              Control characters may be specified as ^char (e.g., ^c or ^u)
              and ^? may be used to indicate delete (127).  Use ^- to denote
              undef.  Use \034 to represent ^\, since a literal backslash in
              an X resource escapes the next character.

              This is very useful for overriding the default terminal
              settings without having to run stty every time an xterm is
              started.  Note, however, that the stty program on a given host
              may use different keywords; xterm's table is built in.  The
              POSIX column in the table indicates which keywords are
              supported by a standard stty program.

              If the ttyModes resource specifies a value for erase, that
              overrides the ptyInitialErase resource setting, i.e., xterm
              initializes the terminal to match that value.

      useInsertMode (class UseInsertMode)
              Force use of insert mode by adding appropriate entries to the
              TERMCAP environment variable.  This is useful if the system
              termcap is broken.  (This resource is ignored on most systems,
              because TERMCAP is not used).  The default is ``false''.

      utmpDisplayId (class UtmpDisplayId)
              Specifies whether or not xterm should try to record the
              display identifier (display number and screen number) as well
              as the hostname in the system utmp log file.  The default is
              ``true''.

      utmpInhibit (class UtmpInhibit)
              Specifies whether or not xterm should try to record the user's
              terminal in the system utmp log file.  If true, xterm will not
              try.  The default is ``false''.

      validShells (class ValidShells)
              Augment (add to) the system's /etc/shells, when determining
              whether to set the ``SHELL'' environment variable when running
              a given program.

              The resource value is a list of lines (separated by newlines).
              Each line holds one pathname.  Xterm ignores any line
              beginning with ``#'' after trimming leading/trailing
              whitespace from each line.

              The default is an empty string.

      waitForMap (class WaitForMap)



                                   - 33 -       Formatted:  October 24, 2018






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                                __app_date__



              Specifies whether or not xterm should wait for the initial
              window map before starting the subprocess.  This is part of
              the ptyHandshake logic.  When xterm is directed to wait in
              this fashion, it passes the terminal size from the display end
              of the pseudo-terminal to the terminal I/O connection, e.g.,
              using the size according to the window manager.  Otherwise, it
              uses the size as given in resource values or command-line
              option -geometry.  The default is ``false''.

      zIconBeep (class ZIconBeep)
              Same as -ziconbeep command line argument.  If the value of
              this resource is non-zero, xterms that produce output while
              iconified will cause an XBell sound at the given volume and
              have ``*** '' prepended to their icon titles.  Most window
              managers will detect this change immediately, showing you
              which window has the output.  (A similar feature was in x10
              xterm.) The default is ``false''.

      zIconTitleFormat (class ZIconTitleFormat)
              Allow customization of the string used in the zIconBeep
              feature.  The default value is ``*** %s''.

              If the resource value contains a ``%s'', then xterm inserts
              the icon title at that point rather than prepending the string
              to the icon title.  (Only the first ``%s'' is used).

    VT100 Widget Resources
      The following resources are specified as part of the vt100 widget
      (class VT100).  They are specified by patterns such as
      ``__default_class__.vt100.NAME''.

      If your xterm is configured to support the ``toolbar'', then those
      patterns need an extra level for the form-widget which holds the
      toolbar and vt100 widget.  A wildcard between the top-level
      ``__default_class__'' and the ``vt100'' widget makes the resource
      settings work for either, e.g., ``__default_class__*vt100.NAME''.

      activeIcon (class ActiveIcon)
              Specifies whether or not active icon windows are to be used
              when the xterm window is iconified, if this feature is
              compiled into xterm.  The active icon is a miniature
              representation of the content of the window and will update as
              the content changes.  Not all window managers necessarily
              support application icon windows.  Some window managers will
              allow you to enter keystrokes into the active icon window.
              The default is ``default''.

              Xterm accepts either a keyword (ignoring case) or the number
              shown in parentheses:



                                   - 34 -       Formatted:  October 24, 2018






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                                __app_date__



              false (0)
                   No active icon is shown.

              true (1)
                   The active icon is shown.  If you are using twm, use this
                   setting to enable active-icons.

              default (2)
                   Xterm checks at startup, and shows an active icon only
                   for window managers which it can identify and which are
                   known to support the feature.  These are fvwm (full
                   support), and window maker (limited).  A few other
                   windows managers (such as twm and ctwm) support active
                   icons, but do not support the extensions which allow
                   xterm to identify the window manager.

      allowBoldFonts (class AllowBoldFonts)
              When set to ``false'', xterm will not use bold fonts.  This
              overrides both the alwaysBoldMode and the boldMode resources.

      allowC1Printable (class AllowC1Printable)
              If true, overrides the mapping of C1 controls (codes 128159)
              to make them be treated as if they were printable characters.
              Although this corresponds to no particular standard, some
              users insist it is a VT100.  The default is ``false''.

      allowColorOps (class AllowColorOps)
              Specifies whether control sequences that set/query the dynamic
              colors should be allowed.  ANSI colors are unaffected by this
              resource setting.  The default is ``true''.

      allowFontOps (class AllowFontOps)
              Specifies whether control sequences that set/query the font
              should be allowed.  The default is ``true''.

      allowMouseOps (class AllowMouseOps)
              Specifies whether control sequences that enable xterm to send
              escape sequences to the host on mouse-clicks and movement.
              The default is ``true''.

      allowPasteControls (class AllowPasteControls)
              If true, allow control characters such as BEL and CAN to be
              pasted.  Formatting characters (tab, newline) are always
              allowed.  Other C0 control characters are suppressed unless
              this resource is enabled.  The exact set of control characters
              (C0 and C1) depends upon whether UTF-8 encoding is used, as
              well as the allowC1Printable resource.  The default is
              ``false''.




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                                __app_date__



      allowScrollLock (class AllowScrollLock)
              Specifies whether control sequences that set/query the Scroll
              Lock key should be allowed, as well as whether the Scroll Lock
              key responds to user's keypress.  The default is ``false''.

              When this feature is enabled, xterm will sense the state of
              the Scroll Lock key each time it acquires focus.  Pressing the
              Scroll Lock key toggles xterm's internal state, as well as
              toggling the associated LED.  While the Scroll Lock is active,
              xterm attempts to keep a viewport on the same set of lines.
              If the current viewport is scrolled past the limit set by the
              saveLines resource, then Scroll Lock has no further effect.

              The reason for setting the default to ``false'' is to avoid
              user surprise.  This key is generally unused in keyboard
              configurations, and has not acquired a standard meaning even
              when it is used in that manner.  Consequently, users have
              assigned it for ad hoc purposes.

      allowSendEvents (class AllowSendEvents)
              Specifies whether or not synthetic key and button events
              (generated using the X protocol SendEvent request) should be
              interpreted or discarded.  The default is ``false'' meaning
              they are discarded.  Note that allowing such events would
              create a very large security hole, therefore enabling this
              resource forcefully disables the allowXXXOps resources.  The
              default is ``false''.

      allowTcapOps (class AllowTcapOps)
              Specifies whether control sequences that query the terminal's
              notion of its function-key strings, as termcap or terminfo
              capabilities should be allowed.  The default is ``true''.

              A few programs, e.g., vim, use this feature to get an accurate
              description of the terminal's capabilities, independent of the
              termcap/terminfo setting:

              +   Xterm can tell the querying program how many colors it
                  supports.  This is a constant, depending on how it is
                  compiled, typically 16.  It does not change if you alter
                  resource settings, e.g., the boldColors resource.

              +   Xterm can tell the querying program what strings are sent
                  by modified (shift-, control-, alt-) function- and
                  keypad-keys.  Reporting control- and alt-modifiers is a
                  feature that relies on the ncurses extended naming.

      allowTitleOps (class AllowTitleOps)
              Specifies whether control sequences that modify the window



                                   - 36 -       Formatted:  October 24, 2018






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                                __app_date__



              title or icon name should be allowed.  The default is
              ``true''.

      allowWindowOps (class AllowWindowOps)
              Specifies whether extended window control sequences (as used
              in dtterm) should be allowed.  These include several control
              sequences which manipulate the window size or position, as
              well as reporting these values and the title or icon name.
              Each of these can be abused in a script; curiously enough most
              terminal emulators that implement these restrict only a small
              part of the repertoire.  For fine-tuning, see
              disallowedWindowOps.  The default is ``false''.

      altIsNotMeta (class AltIsNotMeta)
              If ``true'', treat the Alt-key as if it were the Meta-key.
              Your keyboard may happen to be configured so they are the
              same.  But if they are not, this allows you to use the same
              prefix- and shifting operations with the Alt-key as with the
              Meta-key.  See altSendsEscape and metaSendsEscape.  The
              default is ``false''.

      altSendsEscape (class AltSendsEscape)
              This is an additional keyboard operation that may be processed
              after the logic for metaSendsEscape.  It is only available if
              the altIsNotMeta resource is set.

              +   If ``true'', Alt characters (a character combined with the
                  modifier associated with left/right Alt-keys) are
                  converted into a two-character sequence with the character
                  itself preceded by ESC.  This applies as well to function
                  key control sequences, unless xterm sees that Alt is used
                  in your key translations.

              +   If ``false'', Alt characters input from the keyboard cause
                  a shift to 8-bit characters (just like metaSendsEscape).
                  By combining the Alt- and Meta-modifiers, you can create
                  corresponding combinations of ESC-prefix and 8-bit
                  characters.

              The default is ``__alt_sends_esc__''.  Xterm provides a menu
              option for toggling this resource.

      alternateScroll (class ScrollCond)
              If ``true'', the scroll-back and scroll-forw actions send
              cursor-up and -down keys when xterm is displaying the
              alternate screen.  The default is ``false''.

              The alternateScroll state can also be set using a control
              sequence.



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 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



      alwaysBoldMode (class AlwaysBoldMode)
              Specifies whether xterm should check if the normal and bold
              fonts are distinct before deciding whether to use overstriking
              to simulate bold fonts.  If this resource is true, xterm does
              not make the check for distinct fonts when deciding how to
              handle the boldMode resource.  The default is ``false''.  l l
              l l _ _ _ _ l l l l.
              boldMode  alwaysBoldMode Comparison     Action
              false     false     ignored   use font
              false     true ignored   use font
              true false     same overstrike true false     different use
              font true true ignored   overstrike
              This resource is used only for bitmap fonts:

              +   When using bitmap fonts, it is possible that the font
                  server will approximate the bold font by rescaling it from
                  a different font size than expected.  The alwaysBoldMode
                  resource allows the user to override the (sometimes poor)
                  resulting bold font with overstriking (which is at least
                  consistent).

              +   The problem does not occur with TrueType fonts (though
                  there can be other unnecessary issues such as different
                  coverage of the normal and bold fonts).

              As an alternative, setting the allowBoldFonts resource to
              false overrides both the alwaysBoldMode and the boldMode
              resources.

      alwaysHighlight (class AlwaysHighlight)
              Specifies whether or not xterm should always display a
              highlighted text cursor.  By default (if this resource is
              false), a hollow text cursor is displayed whenever the pointer
              moves out of the window or the window loses the input focus.
              The default is ``false''.

      alwaysUseMods (class AlwaysUseMods)
              Override the numLock resource, telling xterm to use the Alt
              and Meta modifiers to construct parameters for function key
              sequences even if those modifiers appear in the translations
              resource.  Normally xterm checks if Alt or Meta is used in a
              translation that would conflict with function key modifiers,
              and will ignore these modifiers in that special case.  The
              default is ``false''.

      answerbackString (class AnswerbackString)
              Specifies the string that xterm sends in response to an ENQ
              (control/E) character from the host.  The default is a blank
              string, i.e., ``''.  A hardware VT100 implements this feature



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                                __app_date__



              as a setup option.

      appcursorDefault (class AppcursorDefault)
              If ``true'', the cursor keys are initially in application
              mode.  This is the same as the VT102 private DECCKM mode, The
              default is ``false''.

      appkeypadDefault (class AppkeypadDefault)
              If ``true'', the keypad keys are initially in application
              mode.  The default is ``false''.

      assumeAllChars (class AssumeAllChars)
              If ``true'', this enables a special case in bitmap fonts to
              allow the font server to choose how to display missing glyphs.
              The default is ``true''.

              The reason for this resource is to help with certain quasi-
              automatically generated fonts (such as the ISO-10646-1
              encoding of Terminus) which have incorrect font-metrics.

      autoWrap (class AutoWrap)
              Specifies whether or not auto-wraparound should be enabled.
              This is the same as the VT102 DECAWM.  The default is
              ``true''.

      awaitInput (class AwaitInput)
              Specifies whether or not xterm uses a 50 millisecond timeout
              to await input (i.e., to support the Xaw3d arrow scrollbar).
              The default is ``false''.

      backarrowKey (class BackarrowKey)
              Specifies whether the backarrow key transmits a backspace (8)
              or delete (127) character.  This corresponds to the DECBKM
              control sequence.  A ``true'' value specifies backspace.  The
              default is ``__backarrow_is_bs__''.  Pressing the control key
              toggles this behavior.

      background (class Background)
              Specifies the color to use for the background of the window.
              The default is ``XtDefaultBackground''.

      bellIsUrgent (class BellIsUrgent)
              Specifies whether to set the Urgency hint for the window
              manager when making a bell sound.  The default is ``false''.

      bellOnReset (class BellOnReset)
              Specifies whether to sound a bell when doing a hard reset.
              The default is ``true''.




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                                __app_date__



      bellSuppressTime (class BellSuppressTime)
              Number of milliseconds after a bell command is sent during
              which additional bells will be suppressed.  Default is 200.
              If set non-zero, additional bells will also be suppressed
              until the server reports that processing of the first bell has
              been completed; this feature is most useful with the visible
              bell.

      boldColors (class ColorMode)
              Specifies whether to combine bold attribute with colors like
              the IBM PC, i.e., map colors 0 through 7 to colors 8 through
              15.  These normally are the brighter versions of the first 8
              colors, hence bold.  The default is ``true''.

      boldFont (class BoldFont)
              Specifies the name of the bold font to use instead of
              overstriking.  There is no default for this resource.

              This font must be the same height and width as the normal
              font, otherwise it is ignored.  If only one of the normal or
              bold fonts is specified, it will be used as the normal font
              and the bold font will be produced by overstriking this font.

              See also the discussion of boldMode and alwaysBoldMode
              resources.

      boldMode (class BoldMode)
              This specifies whether or not text with the bold attribute
              should be overstruck to simulate bold fonts if the resolved
              bold font is the same as the normal font.  It may be desirable
              to disable bold fonts when color is being used for the bold
              attribute.

              Note that xterm has one bold font which you may set
              explicitly.  Xterm attempts to derive a bold font for the
              other font selections (font1 through font6).  If it cannot
              find a bold font, it will use the normal font.  In each case
              (whether the explicit resource or the derived font), if the
              normal and bold fonts are distinct, this resource has no
              effect.  The default is ``true''.

              See the alwaysBoldMode resource which can modify the behavior
              of this resource.

              Although xterm attempts to derive a bold font for other font
              selections, the font server may not cooperate.  Since X11R6,
              bitmap fonts have been scaled.  The font server claims to
              provide the bold font that xterm requests, but the result is
              not always readable.  XFree86 introduced a feature which can



                                   - 40 -       Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



              be used to suppress the scaling.  In the X server's
              configuration file (e.g., ``/etc/X11/XFree86'' or
              ``/etc/X11/xorg.conf''), you can add ``:unscaled'' to the end
              of the directory specification for the ``misc'' fonts, which
              comprise the fixed-pitch fonts that are used by xterm.  For
              example

                  FontPath  "/usr/lib/X11/fonts/misc/"

              would become

                  FontPath  "/usr/lib/X11/fonts/misc/:unscaled"

              Depending on your configuration, the font server may have its
              own configuration file.  The same ``:unscaled'' can be added
              to its configuration file at the end of the directory
              specification for ``misc''.

              The bitmap scaling feature is also used by xterm to implement
              VT102 double-width and double-height characters.

      brokenLinuxOSC (class BrokenLinuxOSC)
              If true, xterm applies a workaround to ignore malformed
              control sequences that a Linux script might send.  Compare the
              palette control sequences documented in console_codes with
              ECMA-48.  The default is ``true''.

      brokenSelections (class BrokenSelections)
              If true, xterm in 8-bit mode will interpret STRING selections
              as carrying text in the current locale's encoding.  Normally
              STRING selections carry ISO-8859-1 encoded text.  Setting this
              resource to ``true'' violates the ICCCM; it may, however, be
              useful for interacting with some broken X clients.  The
              default is ``false''.

      brokenStringTerm (class BrokenStringTerm)
              provides a work-around for some ISDN routers which start an
              application control string without completing it.  Set this to
              ``true'' if xterm appears to freeze when connecting.  The
              default is ``false''.

              Xterm's state parser recognizes several types of control
              strings which can contain text, e.g.,

              APC (Application Program Command),
              DCS (Device Control String),
              OSC (Operating System Command),
              PM (Privacy Message), and
              SOS (Start of String),



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                                __app_date__



              Each should end with a string-terminator (a special character
              which cannot appear in these strings).  Ordinary control
              characters found within the string are not ignored; they are
              processed without interfering with the process of accumulating
              the control string's content.  Xterm recognizes these controls
              in all modes, although some of the functions may be suppressed
              after parsing the control.

              When enabled, this feature allows the user to exit from an
              unterminated control string when any of these ordinary control
              characters are found:

              control/D (used as an end of file in many shells),
              control/H (backspace),
              control/I (tab-feed),
              control/J (line feed aka newline),
              control/K (vertical tab),
              control/L (form feed),
              control/M (carriage return),
              control/N (shift-out),
              control/O (shift-in),
              control/Q (XOFF),
              control/X (cancel)

      c132 (class C132)
              Specifies whether or not the VT102 DECCOLM escape sequence,
              used to switch between 80 and 132 columns, should be honored.
              The default is ``false''.

      cacheDoublesize (class CacheDoublesize)
              Tells whether to cache double-sized fonts by xterm.  Set this
              to zero to disable double-sized fonts altogether.

      cdXtraScroll (class CdXtraScroll)
              Specifies whether xterm should scroll to a new page when
              clearing the whole screen.  Like tiXtraScroll, the intent of
              this option is to provide a picture of the full-screen
              application's display on the scrollback before wiping out the
              text.  The default for this resource is ``false''.

      charClass (class CharClass)
              Specifies comma-separated lists of character class bindings of
              the form

                  low[-high][:value].

              These are used in determining which sets of characters should
              be treated the same when doing cut and paste.  See the
              CHARACTER CLASSES section.



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                                __app_date__



      checksumExtension (class ChecksumExtension)
              DEC VT420 and up support a control sequence DECRQCRA which
              reports the checksum of the characters in a rectangle.  Xterm
              supports this, with extensions that can be configured with
              bits of the checksumExtension:

              0    do not negate the result.

              1    do not report the VT100 video attributes.

              2    do not omit checksum for blanks.

              3    omit checksum for cells not explicitly initialized.

              4    do not mask cell value to 8 bits or ignore combining
                   characters.

              5    do not mask cell value to 7 bits.

              With the default value (0), xterm matches the behavior of
              DEC's terminals.  To use all extensions, set all bits, ``-1''
              for example.

      cjkWidth (class CjkWidth)
              Specifies whether xterm should follow the traditional East
              Asian width convention.  When turned on, characters with East
              Asian Ambiguous (A) category in UTR 11 have a column width of
              2.  You may have to set this option to ``true'' if you have
              some old East Asian terminal based programs that assume that
              line-drawing characters have a column width of 2.  If this
              resource is false, the mkWidth resource controls the choice
              between the system's wcwidth and xterm's built-in tables.  The
              default is ``false''.

      color0 (class Color0)

      color1 (class Color1)

      color2 (class Color2)

      color3 (class Color3)

      color4 (class Color4)

      color5 (class Color5)

      color6 (class Color6)

      color7 (class Color7)



                                   - 43 -       Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



              These specify the colors for the ISO-6429 extension.  The
              defaults are, respectively, black, red3, green3, yellow3, a
              customizable dark blue, magenta3, cyan3, and gray90.  The
              default shades of color are chosen to allow the colors 815 to
              be used as brighter versions.

      color8 (class Color8)

      color9 (class Color9)

      color10 (class Color10)

      color11 (class Color11)

      color12 (class Color12)

      color13 (class Color13)

      color14 (class Color14)

      color15 (class Color15)
              These specify the colors for the ISO-6429 extension if the
              bold attribute is also enabled.  The default resource values
              are respectively, gray30, red, green, yellow, a customizable
              light blue, magenta, cyan, and white.

      color16 (class Color16)

      through

      color255 (class Color255)
              These specify the colors for the 256-color extension.  The
              default resource values are for colors 16 through 231 to make
              a 6x6x6 color cube, and colors 232 through 255 to make a
              grayscale ramp.

              Resources past color15 are available as a compile-time option.
              Due to a hardcoded limit in the X libraries on the total
              number of resources (to 400), the resources for 256-colors are
              omitted when wide-character support and luit are enabled.
              Besides inconsistent behavior if only part of the resources
              were allowed, determining the exact cutoff is difficult, and
              the X libraries tend to crash if the number of resources
              exceeds the limit.  The color palette is still initialized to
              the same default values, and can be modified via control
              sequences.

              On the other hand, the resource limit does permit including
              the entire range for 88-colors.



                                   - 44 -       Formatted:  October 24, 2018






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                                __app_date__



      colorAttrMode (class ColorAttrMode)
              Specifies whether colorBD, colorBL, colorRV, and colorUL
              should override ANSI colors.  If not, these are displayed only
              when no ANSI colors have been set for the corresponding
              position.  The default is ``false''.

      colorBD (class ColorBD)
              This specifies the color to use to display bold characters if
              the ``colorBDMode'' resource is enabled.  The default is
              ``XtDefaultForeground''.

              See also the veryBoldColors resource which allows combining
              bold and color.

      colorBDMode (class ColorAttrMode)
              Specifies whether characters with the bold attribute should be
              displayed in color or as bold characters.  Note that setting
              colorMode off disables all colors, including bold.  The
              default is ``false''.

      colorBL (class ColorBL)
              This specifies the color to use to display blink characters if
              the ``colorBLMode'' resource is enabled.  The default is
              ``XtDefaultForeground''.

              See also the veryBoldColors resource which allows combining
              underline and color.

      colorBLMode (class ColorAttrMode)
              Specifies whether characters with the blink attribute should
              be displayed in color.  Note that setting colorMode off
              disables all colors, including this.  The default is
              ``false''.

      colorIT (class ColorIT)
              This specifies the color to use to display italic characters
              if the ``colorITMode'' resource is enabled.  The default is
              ``XtDefaultForeground''.

              See also the veryBoldColors resource which allows combining
              attributes and color.

      colorITMode (class ColorAttrMode)
              Specifies whether characters with the italic attribute should
              be displayed in color or as italic characters.  The default is
              ``false''.

              Note that:




                                   - 45 -       Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



              +   Setting colorMode off disables all colors, including
                  italic.

              +   The italicULMode resource overrides colorITMode.

      colorInnerBorder (class ColorInnerBorder)
              Normally, xterm fills the VT100 window's inner border using
              the background color.

              If the colorInnerBorder resource is enabled, at startup xterm
              will compare the borderColor and the window's background
              color.  If those are different, xterm will use the borderColor
              resource to fill the inner border.  Otherwise, it will use the
              window's background color.

              The default is ``false''.

      colorMode (class ColorMode)
              Specifies whether or not recognition of ANSI (ISO-6429) color
              change escape sequences should be enabled.  The default is
              ``true''.

      colorRV (class ColorRV)
              This specifies the color to use to display reverse characters
              if the ``colorRVMode'' resource is enabled.  The default is
              ``XtDefaultForeground''.

              See also the veryBoldColors resource which allows combining
              reverse and color.

      colorRVMode (class ColorAttrMode)
              Specifies whether characters with the reverse attribute should
              be displayed in color.  Note that setting colorMode off
              disables all colors, including this.  The default is
              ``false''.

      colorUL (class ColorUL)
              This specifies the color to use to display underlined
              characters if the ``colorULMode'' resource is enabled.  The
              default is ``XtDefaultForeground''.

              See also the veryBoldColors resource which allows combining
              underline and color.

      colorULMode (class ColorAttrMode)
              Specifies whether characters with the underline attribute
              should be displayed in color or as underlined characters.
              Note that setting colorMode off disables all colors, including
              underlining.  The default is ``false''.



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 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



      combiningChars (class CombiningChars)
              Specifies the number of wide-characters which can be stored in
              a cell to overstrike (combine) with the base character of the
              cell.  This can be set to values in the range 0 to 5.  The
              default is ``2''.

      ctrlFKeys (class CtrlFKeys)
              In VT220 keyboard mode (see sunKeyboard resource), specifies
              the amount by which to shift F1-F12 given a control modifier
              (CTRL).  This allows you to generate key symbols for F10-F20
              on a Sun/PC keyboard.  The default is ``10'', which means that
              CTRL F1 generates the key symbol for F11.

      curses (class Curses)
              Specifies whether or not the last column bug in more(1) should
              be worked around.  See the -cu option for details.  The
              default is ``false''.

      cursorBlink (class CursorBlink)
              Specifies whether to make the cursor blink.  Xterm accepts
              either a keyword (ignoring case) or the number shown in
              parentheses:

              false (0)
                 The cursor will not blink, but may be combined with escape
                 sequences according to the cursorBlinkXOR resource.

              true (1)
                 The cursor will blink, but may be combined with escape
                 sequences according to the cursorBlinkXOR resource.

              always (2)
                 The cursor will always blink, ignoring escape sequences.
                 The menu entry will be disabled.

              never (3)
                 The cursor will never blink, ignoring escape sequences.
                 The menu entry will be disabled.

              The default is ``false''.

      cursorBlinkXOR (class CursorBlinkXOR)
              Xterm uses two inputs to determine whether the cursor blinks:

              +   The cursorBlink resource (which can be altered with a menu
                  entry).

              +   Control sequences (private mode 12 and DECSCUSR).




                                   - 47 -       Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



              The cursorBlinkXOR resource determines how those inputs are
              combined:

              false
                   Xterm uses the logical-OR of the two variables.  If
                   either is set, xterm makes the cursor blink.

              true
                   Xterm uses the logical-XOR of the two variables.  If only
                   one is set, xterm makes the cursor blink.

              The default is ``true''.

      cursorColor (class CursorColor)
              Specifies the color to use for the text cursor.  The default
              is ``XtDefaultForeground''.  By default, xterm attempts to
              keep this color from being the same as the background color,
              since it draws the cursor by filling the background of a text
              cell.  The same restriction applies to control sequences which
              may change this color.

              Setting this resource overrides most of xterm's adjustments to
              cursor color.  It will still use reverse-video to disallow
              some cases, such as a black cursor on a black background.

      cursorOffTime (class CursorOffTime)
              Specifies the duration of the ``off'' part of the cursor blink
              cycle-time in milliseconds.  The same timer is used for text
              blinking.  The default is ``300''.

      cursorOnTime (class CursorOnTime)
              Specifies the duration of the ``on'' part of the cursor blink
              cycle-time, in milliseconds.  The same timer is used for text
              blinking.  The default is ``600''.

      cursorUnderLine (class CursorUnderLine)
              Specifies whether to make the cursor underlined or a box.  The
              default is ``false''.

      cutNewline (class CutNewline)
              If ``false'', triple clicking to select a line does not
              include the newline at the end of the line.  If ``true'', the
              Newline is selected.  The default is ``true''.

      cutToBeginningOfLine (class CutToBeginningOfLine)
              If ``false'', triple clicking to select a line selects only
              from the current word forward.  If ``true'', the entire line
              is selected.  The default is ``true''.




                                   - 48 -       Formatted:  October 24, 2018






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                                __app_date__



      decTerminalID (class DecTerminalID)
              Specifies the emulation level (100=VT100, 220=VT220, etc.),
              used to determine the type of response to a DA control
              sequence.  Leading non-digit characters are ignored, e.g.,
              ``vt100'' and ``100'' are the same.  The default is
              ``__default_termid__''.

      defaultString (class DefaultString)
              Specify the character (or string) which xterm will substitute
              when pasted text includes a character which cannot be
              represented in the current encoding.  For instance, pasting
              UTF-8 text into a display of ISO-8859-1 characters will only
              be able to display codes 0255, while UTF-8 text can include
              Unicode values above 255.  The default is ``#'' (a single
              pound sign).

              If the undisplayable text would be double-width, xterm will
              add a space after the ``#'' character, to give roughly the
              same layout on the screen as the original text.

      deleteIsDEL (class DeleteIsDEL)
              Specifies whether the Delete key on the editing keypad should
              send DEL (127) or the VT220-style Remove escape sequence.  A
              ``false'' value enables the latter.  The default is
              ``__delete_is_del__''.

      directColor (class DirectColor)
              Specifies whether to handle direct-color control sequences
              using the X server's available colors, or to approximate those
              using a color map with 256 entries.  A ``true'' value enables
              the former.  The default is ``true''.

      disallowedColorOps (class DisallowedColorOps)
              Specify which features will be disabled if allowColorOps is
              false.  This is a comma-separated list of names.  The default
              value is
              SetColor,GetColor,GetAnsiColor

              The names are listed below.  Xterm ignores capitalization, but
              they are shown in mixed-case for clarity.

              SetColor
                   Set a specific dynamic color.

              GetColor
                   Report the current setting of a given dynamic color.

              GetAnsiColor
                   Report the current setting of a given ANSI color



                                   - 49 -       Formatted:  October 24, 2018






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                                __app_date__



                   (actually any of the colors set via ANSI-style controls).

      disallowedFontOps (class DisallowedFontOps)
              Specify which features will be disabled if allowFontOps is
              false.  This is a comma-separated list of names.  The default
              value is

                  SetFont,GetFont

              The names are listed below.  Xterm ignores capitalization, but
              they are shown in mixed-case for clarity.

              SetFont
                   Set the specified font.

              GetFont
                   Report the specified font.

      disallowedMouseOps (class DisallowedMouseOps)
              Specify which features will be disabled if allowMouseOps is
              false.  This is a comma-separated list of names.  The default
              value is ``*'' which matches all names.  The names are listed
              below.  Xterm ignores capitalization, but they are shown in
              mixed-case for clarity.

              X10  The original X10 mouse protocol.

              Locator
                   DEC locator mode

              VT200Click
                   X11 mouse-clicks only.

              VT200Hilite
                   X11 mouse-clicks and highlighting.

              AnyButton
                   XFree86 xterm any-button mode sends button-clicks as well
                   as motion events while the button is pressed.

              AnyEvent
                   XFree86 xterm any-event mode sends button-clicks as well
                   as motion events whether or not a button is pressed.

              FocusEvent
                   Send FocusIn/FocusOut events.

              Extended
                   The first extension beyond X11 mouse protocol, this



                                   - 50 -       Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



                   encodes the coordinates in UTF-8.  It is deprecated in
                   favor of SGR, but provided for compatibility.

              SGR  This is the recommended extension for mouse-coordinates

              URXVT
                   Like Extended, this is provided for compatibility.

              AlternateScroll
                   This overrides the alternateScroll resource.

      disallowedPasteControls (class DisallowedPasteControls)
              The allowPasteControls resource is normally used to prevent
              pasting C1 controls, as well as non-formatting C0 controls
              such as the ASCII escape character.  Those characters are
              simply ignored.  This resource further extends the set of
              control characters which cannot be pasted, converting each
              into a space.

              The resource value is a comma-separated list of names.  Xterm
              ignores capitalization.  The default value is

                  BS,HT,DEL

              The names are listed below:

              C0   all ASCII control characters.

              BS   ASCII backspace

              CR   ASCII carriage-return

              DEL  ASCII delete

              HT   ASCII tab

              NL   ASCII line-feed, i.e., ``newline''.

      disallowedTcapOps (class DisallowedTcapOps)
              Specify which features will be disabled if allowTcapOps is
              false.  This is a comma-separated list of names.  The default
              value is

                  SetTcap,GetTcap

              The names are listed below.  Xterm ignores capitalization, but
              they are shown in mixed-case for clarity.

              SetTcap



                                   - 51 -       Formatted:  October 24, 2018






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                                __app_date__



                   (not implemented)

              GetTcap
                   Report specified function- and other special keys.

      disallowedWindowOps (class DisallowedWindowOps)
              Specify which features will be disabled if allowWindowOps is
              false.  This is a comma-separated list of names, or (for the
              controls adapted from dtterm the operation number).  The
              default value is

                  20,21,SetXprop,SetSelection
                  (i.e. no operations are allowed).

              The names are listed below.  Xterm ignores capitalization, but
              they are shown in mixed-case for clarity.  Where a number can
              be used as an alternative, it is given in parentheses after
              the name.

              GetChecksum
                   Report checksum of characters in a rectangular region.

              GetIconTitle (20)
                   Report xterm window's icon label as a string.

              GetScreenSizeChars (19)
                   Report the size of the screen in characters as numbers.

              GetSelection
                   Report selection data as a base64 string.

              GetWinPosition (13)
                   Report xterm window position as numbers.

              GetWinSizeChars (18)
                   Report the size of the text area in characters as
                   numbers.

              GetWinSizePixels (14)
                   Report xterm window in pixels as numbers.

              GetWinState (11)
                   Report xterm window state as a number.

              GetWinTitle (21)
                   Report xterm window's title as a string.

              LowerWin (6)
                   Lower the xterm window to the bottom of the stacking



                                   - 52 -       Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



                   order.

              MaximizeWin (9)
                   Maximize window (i.e., resize to screen size).

              FullscreenWin (10)
                   Use full screen (i.e., resize to screen size, without
                   window decorations).

              MinimizeWin (2)
                   Iconify window.

              PopTitle (23)
                   Pop title from internal stack.

              PushTitle (22)
                   Push title to internal stack.

              RaiseWin (5)
                   Raise the xterm window to the front of the stacking
                   order.

              RefreshWin (7)
                   Refresh the xterm window.

              RestoreWin (1)
                   De-iconify window.

              SetChecksum
                   Modify algorithm for reporting checksum of characters in
                   a rectangular region.

              SetSelection
                   Set selection data.

              SetWinLines
                   Resize to a given number of lines, at least 24.

              SetWinPosition (3)
                   Move window to given coordinates.

              SetWinSizeChars (8)
                   Resize the text area to given size in characters.

              SetWinSizePixels (4)
                   Resize the xterm window to given size in pixels.

              SetXprop
                   Set X property on top-level window.



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 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



      dynamicColors (class DynamicColors)
              Specifies whether or not escape sequences to change colors
              assigned to different attributes are recognized.

      eightBitControl (class EightBitControl)
              Specifies whether or not control sequences sent by the
              terminal should be eight-bit characters or escape sequences.
              The default is ``false''.

      eightBitInput (class EightBitInput)
              If ``true'', Meta characters (a single-byte character combined
              with the Meta modifier key) input from the keyboard are
              presented as a single character, modified according to the
              eightBitMeta resource.  If ``false'', Meta characters are
              converted into a two-character sequence with the character
              itself preceded by ESC.  The default is ``true''.

              The metaSendsEscape and altSendsEscape resources may override
              this feature.  Generally keyboards do not have a key labeled
              ``Meta'', but ``Alt'' keys are common, and they are
              conventionally used for ``Meta''.  If they were synonymous, it
              would have been reasonable to name this resource
              ``altSendsEscape'', reversing its sense.  For more background
              on this, see the meta(3x) function in curses.

              Note that the Alt key is not necessarily the same as the Meta
              modifier.  The xmodmap utility lists your key modifiers.  X
              defines modifiers for shift, (caps) lock and control, as well
              as 5 additional modifiers which are generally used to
              configure key modifiers.  Xterm inspects the same information
              to find the modifier associated with either Meta key (left or
              right), and uses that key as the Meta modifier.  It also looks
              for the NumLock key, to recognize the modifier which is
              associated with that.

              If your xmodmap configuration uses the same keycodes for Alt-
              and Meta-keys, xterm will only see the Alt-key definitions,
              since those are tested before Meta-keys.  NumLock is tested
              first.  It is important to keep these keys distinct; otherwise
              some of xterm's functionality is not available.

              The eightBitInput resource is tested at startup time.  If
              ``true'', the xterm tries to put the terminal into 8-bit mode.
              If ``false'', on startup, xterm tries to put the terminal into
              7-bit mode.  For some configurations this is unsuccessful;
              failure is ignored.  After startup, xterm does not change the
              terminal between 8-bit and 7-bit mode.

              As originally implemented in X11, the resource value did not



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                                __app_date__



              change after startup.  However (since patch #216 in 2006)
              xterm can modify eightBitInput after startup via a control
              sequence.  The corresponding terminfo capabilities smm (set
              meta mode) and rmm (reset meta mode) have been recognized by
              bash for some time.  Interestingly enough, bash's notion of
              ``meta mode'' differs from the standard definition (in the
              terminfo manual), which describes the change to the eighth bit
              of a character.  It happens that bash views ``meta mode'' as
              the ESC character that xterm puts before a character when a
              special meta key is pressed.  bash's early documentation talks
              about the ESC character and ignores the eighth bit.

      eightBitMeta (class EightBitMeta)
              This controls the way xterm modifies the eighth bit of a
              single-byte key when the eightBitInput resource is set.  The
              default is ``locale''.

              The resource value is a string, evaluated as a boolean after
              startup.

              false
                   The key is sent unmodified.

              locale
                   The key is modified only if the locale uses eight-bit
                   encoding.

              true The key is sent modified.

              never
                   The key is always sent unmodified.

              Except for the never choice, xterm honors the terminfo
              capabilities smm (set meta mode) and rmm (reset meta mode),
              allowing the feature to be turned on or off dynamically.

              If eightBitMeta is enabled when the locale uses UTF-8, xterm
              encodes the value as UTF-8 (since patch #183 in 2003).

      eightBitOutput (class EightBitOutput)
              Specifies whether or not eight-bit characters sent from the
              host should be accepted as is or stripped when printed.  The
              default is ``true'', which means that they are accepted as is.

      eightBitSelectTypes (class EightBitSelectTypes)
              Override xterm's default selection target list (see
              SELECT/PASTE) for selections in normal (ISO-8859-1) mode.  The
              default is an empty string, i.e., ``'', which does not
              override anything.



                                   - 55 -       Formatted:  October 24, 2018






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                                __app_date__



      eraseSavedLines (class EraseSavedLines)
              Specifies whether or not to allow xterm extended ED/DECSED
              control sequences to erase the saved-line buffer.  The default
              is ``true''.

      faceName (class FaceName)
              Specify the pattern for scalable fonts selected from the
              FreeType library if support for that library was compiled into
              xterm.  There is no default value.

              One or more fonts can be specified, separated by commas.  If
              prefixed with ``x:'' or ``x11:'' the specification applies to
              the XLFD font resource.  A ``xft:'' prefix is accepted but
              unnecessary since a missing prefix for faceName means that it
              will be used for TrueType.  For example,

                  XTerm*faceName: x:fixed,xft:Bitstream Vera Sans Mono

              If no faceName resource is specified, or if there is no match
              for both TrueType normal and bold fonts, xterm uses the XLFD
              (bitmap) font and related resources.

              It is possible to select suitable bitmap fonts using a script
              such as this:

                  #!/bin/sh
                  FONT=`xfontsel -print`
                  test -n "$FONT" && xfd -fn "$FONT"

              However (even though xfd accepts a ``-fa'' option to denote
              FreeType fonts), xfontsel has not been similarly extended.  As
              a workaround, you may try

                  fc-list :scalable=true:spacing=mono: family

              to find a list of scalable fixed-pitch fonts which may be used
              for the faceName resource value.

      faceNameDoublesize (class FaceNameDoublesize)
              Specify a double-width scalable font for cases where an
              application requires this, e.g., in CJK applications.  There
              is no default value.

              Like the faceName resource, this allows one or more comma-
              separated font specifications to be applied to the wide
              TrueType or XLFD fonts.

              If the application uses double-wide characters and this
              resource is not given, xterm will use a scaled version of the



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              font given by faceName.

      faceSize (class FaceSize)
              Specify the pointsize for fonts selected from the FreeType
              library if support for that library was compiled into xterm.
              The default is ``14.0'' On the VT Fonts menu, this corresponds
              to the Default entry.

              Although the default is ``14.0'', this may not be the same as
              the pointsize for the default bitmap font, i.e., that assigned
              with the -fn option, or the font resource.  For example, the
              ``fixed'' font usually has a pointsize of ``8.0''.  If you set
              faceSize to match the size of the bitmap font, then switching
              between bitmap and TrueType fonts via the font menu will give
              comparable sizes for the window.

              You can specify the pointsize for TrueType fonts selected with
              the other size-related menu entries such as Medium, Huge,
              etc., by using one of the following resource values.  If you
              do not specify a value, they default to ``0.0'', which causes
              xterm to use the ratio of font sizes from the corresponding
              bitmap font resources to obtain a TrueType pointsize.

              If all of the faceSize resources are set, then xterm will use
              this information to determine the next smaller/larger TrueType
              font for the larger-vt-font() and smaller-vt-font() actions.
              If any are not set, xterm will use only the areas of the
              bitmap fonts.

      faceSize1 (class FaceSize1)
              Specifies the pointsize of the first alternative font.

      faceSize2 (class FaceSize2)
              Specifies the pointsize of the second alternative font.

      faceSize3 (class FaceSize3)
              Specifies the pointsize of the third alternative font.

      faceSize4 (class FaceSize4)
              Specifies the pointsize of the fourth alternative font.

      faceSize5 (class FaceSize5)
              Specifies the pointsize of the fifth alternative font.

      faceSize6 (class FaceSize6)
              Specifies the pointsize of the sixth alternative font.

      font (class Font)
              Specifies the name of the normal font.  The default is



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              ``fixed''.

              See the discussion of the locale resource, which describes how
              this font may be overridden.

              NOTE: some resource files use patterns such as

                  *font: fixed

              which are overly broad, affecting both

                  xterm.vt100.font

              and

                  xterm.vt100.utf8Fonts.font

              which is probably not what you intended.

      fastScroll (class FastScroll)
              Modifies the effect of jump scroll (jumpScroll) by suppressing
              screen refreshes for the special case when output to the
              screen has completely shifted the contents off-screen.  For
              instance, cat'ing a large file to the screen does this.

      font1 (class Font1)
              Specifies the name of the first alternative font,
              corresponding to ``Unreadable'' in the standard menu.

      font2 (class Font2)
              Specifies the name of the second alternative font,
              corresponding to ``Tiny'' in the standard menu.

      font3 (class Font3)
              Specifies the name of the third alternative font,
              corresponding to ``Small'' in the standard menu.

      font4 (class Font4)
              Specifies the name of the fourth alternative font,
              corresponding to ``Medium'' in the standard menu.

      font5 (class Font5)
              Specifies the name of the fifth alternative font,
              corresponding to ``Large'' in the standard menu.

      font6 (class Font6)
              Specifies the name of the sixth alternative font,
              corresponding to ``Huge'' in the standard menu.




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      fontDoublesize (class FontDoublesize)
              Specifies whether xterm should attempt to use font scaling to
              draw double-sized characters.  Some older font servers cannot
              do this properly, will return misleading font metrics.  The
              default is ``true''.  If disabled, xterm will simulate
              double-sized characters by drawing normal characters with
              spaces between them.

      fontWarnings (class FontWarnings)
              Specify whether xterm should report an error if it fails to
              load a font:

              0    Never report an error (though the X libraries may).

              1    Report an error if the font name was given as a resource
                   setting.

              2    Always report an error on failure to load a font.

              The default is ``1''.

      forceBoxChars (class ForceBoxChars)
              Specifies whether xterm should assume the normal and bold
              fonts have VT100 line-drawing characters:

              +   The fixed-pitch ISO-8859-*-encoded fonts used by xterm
                  normally have the VT100 line-drawing glyphs in cells 131.
                  Other fixed-pitch fonts may be more attractive, but lack
                  these glyphs.

              +   When using an ISO-10646-1 font and the wideChars resource
                  is true, xterm uses the Unicode glyphs which match the
                  VT100 line-drawing glyphs.

              If ``false'', xterm checks for missing glyphs in the font and
              makes line-drawing characters directly as needed.  If
              ``true'', xterm assumes the font does not contain the line-
              drawing characters, and draws them directly.  The default is
              ``false''.

      forcePackedFont (class ForcePackedFont)
              Specifies whether xterm should use the maximum or minimum
              glyph width when displaying using a bitmap font.  Use the
              maximum width to help with proportional fonts.  The default is
              ``true'', denoting the minimum width.

      foreground (class Foreground)
              Specifies the color to use for displaying text in the window.
              Setting the class name instead of the instance name is an easy



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              way to have everything that would normally appear in the text
              color change color.  The default is ``XtDefaultForeground''.

      formatOtherKeys (class FormatOtherKeys)
              Overrides the format of the escape sequence used to report
              modified keys with the modifyOtherKeys resource.

              0  send modified keys as parameters for function-key 27
                 (default).

              1  send modified keys as parameters for CSI u.

      freeBoldBox (class FreeBoldBox)
              Specifies whether xterm should assume the bounding boxes for
              normal and bold fonts are compatible.  If ``false'', xterm
              compares them and will reject choices of bold fonts that do
              not match the size of the normal font.  The default is
              ``false'', which means that the comparison is performed.

      geometry (class Geometry)
              Specifies the preferred size and position of the VTxxx window.
              There is no default for this resource.

      highlightColor (class HighlightColor)
              Specifies the color to use for the background of selected
              (highlighted) text.  If not specified (i.e., matching the
              default foreground), reverse video is used.  The default is
              ``XtDefaultForeground''.

      highlightColorMode (class HighlightColorMode)
              Specifies whether xterm should use highlightTextColor and
              highlightColor to override the reversed foreground/background
              colors in a selection.  The default is unspecified: at
              startup, xterm checks if those resources are set to something
              other than the default foreground and background colors.
              Setting this resource disables the check.

              The following table shows the interaction of the highlighting
              resources, abbreviated as shown to fit in this page:

              HCM
                 highlightColorMode

              HR highlightReverse

              HBG
                 highlightColor

              HFG



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                 highlightTextColor

              l l l l l _ _ _ _ _ l l l l l.  HCM  HR   HBG  HFG  Highlight
              false     false     default   default   bg/fg
              false     false     default   set  bg/fg
              false     false     set  default   fg/HBG
              false     false     set  set  fg/HBG =
              false     true default   default   bg/fg
              false     true default   set  bg/fg
              false     true set  default   fg/HBG
              false     true set  set  fg/HBG =
              true false     default   default   bg/fg
              true false     default   set  HFG/fg
              true false     set  default   bg/HBG
              true false     set  set  HFG/HBG =
              true true default   default   bg/fg
              true true default   set  HFG/fg
              true true set  default   fg/HBG true true set  set  HFG/HBG =
              default   false     default   default   bg/fg
              default   false     default   set  bg/fg
              default   false     set  default   fg/HBG
              default   false     set  set  HFG/HBG =
              default   true default   default   bg/fg
              default   true default   set  bg/fg
              default   true set  default   fg/HBG
              default   true set  set  HFG/HBG =

      highlightReverse (class HighlightReverse)
              Specifies whether xterm should reverse the selection
              foreground and background colors when selecting text with
              reverse-video attribute.  This applies only to the
              highlightColor and highlightTextColor resources, e.g., to
              match the color scheme of xwsh.  If ``true'', xterm reverses
              the colors, If ``false'', xterm does not reverse colors, The
              default is ``true''.

      highlightSelection (class HighlightSelection)
              Tells xterm whether to highlight all of the selected
              positions, or only the selected text:

              +   If ``false'', selecting with the mouse highlights all
                  positions on the screen between the beginning of the
                  selection and the current position.

              +   If ``true'', xterm highlights only the positions that
                  contain text that can be selected.

              The default is ``false''.




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              Depending on the way your applications write to the screen,
              there may be trailing blanks on a line.  Xterm stores data as
              it is shown on the screen.  Erasing the display changes the
              internal state of each cell so it is not considered a blank
              for the purpose of selection.  Blanks written since the last
              erase are selectable.  If you do not wish to have trailing
              blanks in a selection, use the trimSelection resource.

      highlightTextColor (class HighlightTextColor)
              Specifies the color to use for the foreground of selected
              (highlighted) text.  If not specified (i.e., matching the
              default background), reverse video is used.  The default is
              ``XtDefaultBackground''.

      hpLowerleftBugCompat (class HpLowerleftBugCompat)
              Specifies whether to work around a bug in HP's xdb, which
              ignores termcap and always sends ESC F to move to the lower
              left corner.  ``true'' causes xterm to interpret ESC F as a
              request to move to the lower left corner of the screen.  The
              default is ``false''.

      i18nSelections (class I18nSelections)
              If false, xterm will not request the targets COMPOUND_TEXT or
              TEXT.  The default is ``true''.  It may be set to false in
              order to work around ICCCM violations by other X clients.

      iconBorderColor (class BorderColor)
              Specifies the border color for the active icon window if this
              feature is compiled into xterm.  Not all window managers will
              make the icon border visible.

      iconBorderWidth (class BorderWidth)
              Specifies the border width for the active icon window if this
              feature is compiled into xterm.  The default is ``2''.  Not
              all window managers will make the border visible.

      iconFont (class IconFont)
              Specifies the font for the miniature active icon window, if
              this feature is compiled into xterm.  The default is ``nil2''.

      initialFont (class InitialFont)
              Specifies which of the VT100 fonts to use initially.  Values
              are the same as for the set-vt-font action.  The default is
              ``d'', i.e., ``default''.

      inputMethod (class InputMethod)
              Tells xterm which type of input method to use.  There is no
              default method.




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      internalBorder (class BorderWidth)
              Specifies the number of pixels between the characters and the
              window border.  The default is ``2''.

      italicULMode (class ColorAttrMode)
              Specifies whether characters with the underline attribute
              should be displayed in an italic font or as underlined
              characters.  It is implemented only for TrueType fonts.

      jumpScroll (class JumpScroll)
              Specifies whether or not jump scroll should be used.  This
              corresponds to the VT102 DECSCLM private mode.  The default is
              ``true''.  See fastScroll for a variation.

      keepClipboard (class KeepClipboard)
              Specifies whether xterm will reuse the selection data which it
              copied to the keyboard rather than asking the clipboard for
              its current contents when told to provide the selection.  The
              default is ``false''.

      keepSelection (class KeepSelection)
              Specifies whether xterm will keep the selection even after the
              selected area was touched by some output to the terminal.  The
              default is ``true''.

      keyboardDialect (class KeyboardDialect)
              Specifies the initial keyboard dialect, as well as the default
              value when the terminal is reset.  The value given is the same
              as the final character in the control sequences which change
              character sets.  The default is ``B'', which corresponds to US
              ASCII.

      nameKeymap (class NameKeymap)
              See the discussion of the keymap() action.

      limitResize (class LimitResize)
              Limits resizing of the screen via control sequence to a given
              multiple of the display dimensions.  The default is ``1''.

      locale (class Locale)
              Specifies how to use luit, an encoding converter between UTF-8
              and locale encodings.  The resource value (ignoring case) may
              be:

              true
                  Xterm will use the encoding specified by the users'
                  LC_CTYPE locale (i.e., LC_ALL, LC_CTYPE, or LANG
                  variables) as far as possible.  This is realized by always
                  enabling UTF-8 mode and invoking luit in non-UTF-8



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                  locales.

              medium
                  Xterm will follow users' LC_CTYPE locale only for UTF-8,
                  east Asian, and Thai locales, where the encodings were not
                  supported by conventional 8bit mode with changing fonts.
                  For other locales, xterm will use conventional 8bit mode.

              checkfont
                  If mini-luit is compiled-in, xterm will check if a Unicode
                  font has been specified.  If so, it checks if the
                  character encoding for the current locale is POSIX,
                  Latin-1 or Latin-9, uses the appropriate mapping to
                  support those with the Unicode font.  For other encodings,
                  xterm assumes that UTF-8 encoding is required.

              false
                  Xterm will use conventional 8bit mode or UTF-8 mode
                  according to utf8 resource or -u8 option.

              Any other value, e.g., ``UTF-8'' or ``ISO8859-2'', is assumed
              to be an encoding name; luit will be invoked to support the
              encoding.  The actual list of supported encodings depends on
              luit.  The default is ``medium''.

              Regardless of your locale and encoding, you need an ISO-
              10646-1 font to display the result.  Your configuration may
              not include this font, or locale-support by xterm may not be
              needed.

              At startup, xterm uses a mechanism equivalent to the load-vt-
              fonts(utf8Fonts, Utf8Fonts) action to load font name
              subresources of the VT100 widget.  That is, resource patterns
              such as ``*vt100.utf8Fonts.font'' will be loaded, and (if this
              resource is enabled), override the normal fonts.  If no
              subresources are found, the normal fonts such as
              ``*vt100.font'', etc., are used.

              For instance, you could have this in your resource file:

                  *VT100.font: 12x24
                  *VT100.utf8Fonts.font:9x15

              When started with a UTF-8 locale, xterm would use 9x15, but
              allow you to switch to the 12x24 font using the menu entry
              ``UTF-8 Fonts''.

              The resource files distributed with xterm use ISO-10646-1
              fonts, but do not rely on them unless you are using the locale



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              mechanism.

      localeFilter (class LocaleFilter)
              Specifies the file name for the encoding converter from/to
              locale encodings and UTF-8 which is used with the -lc option
              or locale resource.  The help message shown by ``xterm -help''
              lists the default value, which depends on your system
              configuration.

              If the encoding converter requires command-line parameters,
              you can add those after the command, e.g.,

                  *localeFilter: xterm-filter -p

              Alternatively, you may put those parameter within a shell
              script to execute the converter, and set this resource to
              point to the shell script.

              When using a locale-filter, e.g., with the -e option, or the
              shell, xterm first tries passing control via that filter.  If
              it fails, xterm will retry without the locale-filter.  Xterm
              warns about the failure before retrying.

      loginShell (class LoginShell)
              Specifies whether or not the shell to be run in the window
              should be started as a login shell.  The default is ``false''.

      logFile (class Logfile)
              Specify the name for xterm's log-file.  If no name is
              specified, xterm will generate a name when logging is enabled,
              as described in the -l option.

      logInhibit (class LogInhibit)
              If ``true'', prevent the logging feature from being enabled,
              whether by the command-line option -l, or the menu entry Log
              to File.  The default is ``false''.

      logging (class Logging)
              If ``true'', (and if logInhibit is not set) enable the logging
              feature.  This resource is set/updated by the -l option and
              the menu entry Log to File.  The default is ``false''.

      marginBell (class MarginBell)
              Specifies whether or not the bell should be rung when the user
              types near the right margin.  The default is ``false''.

      maxGraphicSize (class MaxGraphicSize)
              If xterm is configured to support ReGIS or SIXEL graphics,
              this resource controls the maximum size of a graph which can



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              be displayed.

              The default is ``1000x1000'' (given as width by height).

              If the resource is ``auto'' then xterm will use the
              decTerminalID resource: l l _ _ r r.  Result    decTerminalID
              768x400   125 800x460   240 800x460   241 800x480   330
              800x480   340 860x750   382 800x480   other

      metaSendsEscape (class MetaSendsEscape)
              Tells xterm what to do with input-characters modified by Meta:

              +   If ``true'', Meta characters (a character combined with
                  the Meta modifier key) are converted into a two-character
                  sequence with the character itself preceded by ESC.  This
                  applies as well to function key control sequences, unless
                  xterm sees that Meta is used in your key translations.

              +   If ``false'', Meta characters input from the keyboard are
                  handled according to the eightBitInput resource.

              The default is ``__meta_sends_esc__''.

      mkSamplePass (class MkSamplePass)
              If mkSampleSize is nonzero, and mkWidth (and cjkWidth) are
              false, on startup xterm compares its built-in tables to the
              system's wide character width data to decide if it will use
              the system's data.  It tests the first mkSampleSize character
              values, and allows up to mkSamplePass mismatches before the
              test fails.  The default (for the allowed number of
              mismatches) is 655 (one percent of the default value for
              mkSampleSize).

      mkSampleSize (class MkSampleSize)
              With mkSamplePass, this specifies a startup test used for
              initializing wide character width calculations.  The default
              (number of characters to check) is 65536.

      mkWidth (class MkWidth)
              Specifies whether xterm should use a built-in version of the
              wide character width calculation.  See also the cjkWidth
              resource which can override this.  The default is ``false''.

              Here is a summary of the resources which control the choice of








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              wide character width calculation: l l l _ _ _ l l l.
              cjkWidth  mkWidth   Action false     false     use system
              tables subject to mkSamplePass false     true use built-in
              tables true false     use built-in CJK tables true true use
              built-in CJK tables

      modifyCursorKeys (class ModifyCursorKeys)
              Tells how to handle the special case where Control-, Shift-,
              Alt- or Meta-modifiers are used to add a parameter to the
              escape sequence returned by a cursor-key.  The default is
              ``2'':

              -1   disables the feature.

              0    uses the old/obsolete behavior, i.e., the modifier is the
                   first parameter.

              1    prefixes modified sequences with CSI.

              2    forces the modifier to be the second parameter if it
                   would otherwise be the first.

              3    marks the sequence with a ``>'' to hint that it is
                   private.

      modifyFunctionKeys (class ModifyFunctionKeys)
              Tells how to handle the special case where Control-, Shift-,
              Alt- or Meta-modifiers are used to add a parameter to the
              escape sequence returned by a (numbered) function-key.  The
              default is ``2''.  The resource values are similar to
              modifyCursorKeys:

              -1   permits the user to use shift- and control-modifiers to
                   construct function-key strings using the normal encoding
                   scheme.

              0    uses the old/obsolete behavior, i.e., the modifier is the
                   first parameter.

              1    prefixes modified sequences with CSI.

              2    forces the modifier to be the second parameter if it
                   would otherwise be the first.

              3    marks the sequence with a ``>'' to hint that it is
                   private.

              If modifyFunctionKeys is zero, xterm uses Control- and Shift-
              modifiers to allow the user to construct numbered function-



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              keys beyond the set provided by the keyboard:

              Control
                   adds the value given by the ctrlFKeys resource.

              Shift
                   adds twice the value given by the ctrlFKeys resource.

              Control/Shift
                   adds three times the value given by the ctrlFKeys
                   resource.



      modifyKeyboard (class ModifyKeyboard)
              Normally xterm makes a special case regarding modifiers
              (shift, control, etc.) to handle special keyboard layouts
              (legacy and vt220).  This is done to provide compatible
              keyboards for DEC VT220 and related terminals that implement
              user-defined keys (UDK).

              The bits of the resource value selectively enable modification
              of the given category when these keyboards are selected.  The
              default is ``0'':

              0    The legacy/vt220 keyboards interpret only the Control-
                   modifier when constructing numbered function-keys.  Other
                   special keys are not modified.

              1    allows modification of the numeric keypad

              2    allows modification of the editing keypad

              4    allows modification of function-keys, overrides use of
                   Shift-modifier for UDK.

              8    allows modification of other special keys

      modifyOtherKeys (class ModifyOtherKeys)
              Like modifyCursorKeys, tells xterm to construct an escape
              sequence for other keys (such as ``2'') when modified by
              Control-, Alt- or Meta-modifiers.  This feature does not apply
              to function keys and well-defined keys such as ESC or the
              control keys.  The default is ``0'':

              0    disables this feature.

              1    enables this feature for keys except for those with
                   well-known behavior, e.g., Tab, Backarrow and some



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                   special control character cases, e.g., Control-Space to
                   make a NUL.

              2    enables this feature for keys including the exceptions
                   listed.

      multiClickTime (class MultiClickTime)
              Specifies the maximum time in milliseconds between multi-click
              select events.  The default is ``250'' milliseconds.

      multiScroll (class MultiScroll)
              Specifies whether or not scrolling should be done
              asynchronously.  The default is ``false''.

      nMarginBell (class Column)
              Specifies the number of characters from the right margin at
              which the margin bell should be rung, when enabled by the
              marginBell resource.  The default is ``10''.

      nextEventDelay (class NextEventDelay)
              Specifies a delay time in milliseconds before checking for new
              X events.  The default is ``1''.

      numColorRegisters (class NumColorRegisters)
              If xterm is configured to support ReGIS or SIXEL graphics,
              this specifies the number of color-registers which are
              available.

              If this resource is not specified, xterm uses a value
              determined by the decTerminalID resource: l l _ _ r r.
              Result    decTerminalID 4    125 4    240 4    241 4    330
              16   340 2    382 1024 other

      numLock (class NumLock)
              If ``true'', xterm checks if NumLock is used as a modifier
              (see xmodmap(__mansuffix__)).  If so, this modifier is used to
              simplify the logic when implementing special NumLock for the
              sunKeyboard resource.  Also (when sunKeyboard is false),
              similar logic is used to find the modifier associated with the
              left and right Alt keys.  The default is ``true''.

      oldXtermFKeys (class OldXtermFKeys)
              If ``true'', xterm will use old-style (X11R5) escape sequences
              for function keys F1 to F4, for compatibility with X
              Consortium xterm.  Otherwise, it uses the VT100 codes for PF1
              to PF4.  The default is ``false''.

              Setting this resource has the same effect as setting the
              keyboardType to legacy.  The keyboardType resource is the



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                                __app_date__



              preferred mechanism for selecting this mode.

              The old-style escape sequences resemble VT220 keys, but appear
              to have been invented for xterm in X11R4.

      on2Clicks (class On2Clicks)

      on3Clicks (class On3Clicks)

      on4Clicks (class On4Clicks)

      on5Clicks (class On5Clicks)
              Specify selection behavior in response to multiple mouse
              clicks.  A single mouse click is always interpreted as
              described in the Selection Functions section (see POINTER
              USAGE).  Multiple mouse clicks (using the button which
              activates the select-start action) are interpreted according
              to the resource values of on2Clicks, etc.  The resource value
              can be one of these:

              word
                 Select a ``word'' as determined by the charClass resource.
                 See the CHARACTER CLASSES section.

              line
                 Select a line (counting wrapping).

              group
                 Select a group of adjacent lines (counting wrapping).  The
                 selection stops on a blank line, and does not extend
                 outside the current page.

              page
                 Select all visible lines, i.e., the page.

              all
                 Select all lines, i.e., including the saved lines.

              regex
                 Select the best match for the POSIX extended regular
                 expression (ERE) which follows in the resource value:

                 +   Xterm matches the regular expression against a byte
                     array for the entire (possibly wrapped) line.  That
                     byte array may be UTF-8 or ISO-8859-1, depending on the
                     mode in which xterm is running.

                 +   Xterm steps through each byte-offset in this array,
                     keeping track of the best (longest) match.  If more



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                     than one match ties for the longest length, the first
                     is used.

                     Xterm does this to make it convenient to click anywhere
                     in the area of interest and cause the regular
                     expression to match the entire word, etc.

                 +   The ``^'' and ``$'' anchors in a regular expression
                     denote the ends of the entire line.

                 +   If the regular expression contains backslashes ``\''
                     those should be escaped ``\\'' because the X libraries
                     interpret backslashes in resource strings.

              none
                 No selection action is associated with this resource.
                 Xterm interprets it as the end of the list.  For example,
                 you may use it to disable triple (and higher) clicking by
                 setting on3Clicks to ``none''.

              The default values for on2Clicks and on3Clicks are ``word''
              and ``line'', respectively.  There is no default value for
              on4Clicks or on5Clicks, making those inactive.  On startup,
              xterm determines the maximum number of clicks by the onXClicks
              resource values which are set.

      openIm (class OpenIm)
              Tells xterm whether to open the input method at startup.  The
              default is ``true''.

      pointerColor (class PointerColor)
              Specifies the foreground color of the pointer.  The default is
              ``XtDefaultForeground''.

      pointerColorBackground (class PointerColorBackground)
              Specifies the background color of the pointer.  The default is
              ``XtDefaultBackground''.

      pointerMode (class PointerMode)
              Specifies when the pointer may be hidden as the user types.
              It will be redisplayed if the user moves the mouse, or clicks
              one of its buttons.

              0  never

              1  the application running in xterm has not activated mouse
                 mode.  This is the default.

              2  always.



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      pointerShape (class Cursor)
              Specifies the name of the shape of the pointer.  The default
              is ``xterm''.

      popOnBell (class PopOnBell)
              Specifies whether the window would be raised when Control-G is
              received.  The default is ``false''.

              If the window is iconified, this has no effect.  However, the
              zIconBeep resource provides you with the ability to see which
              iconified windows have sounded a bell.

      precompose (class Precompose)
              Tells xterm whether to precompose UTF-8 data into
              Normalization Form C, which combines commonly-used accents
              onto base characters.  If it does not do this, accents are
              left as separate characters.  The default is ``true''.

      preeditType (class PreeditType)
              Tells xterm which types of preedit (preconversion) string to
              display.  The default is ``OverTheSpot,Root''.

      printAttributes (class PrintAttributes)
              Specifies whether to print graphic attributes along with the
              text.  A real DEC VTxxx terminal will print the underline,
              highlighting codes but your printer may not handle these.

              +   ``0'' disables the attributes.

              +   ``1'' prints the normal set of attributes (bold,
                  underline, inverse and blink) as VT100-style control
                  sequences.

              +   ``2'' prints ANSI color attributes as well.

              The default is ``1''.

      printFileImmediate (class PrintFileImmediate)
              When the print-immediate action is invoked, xterm prints the
              screen contents directly to a file.  Set this resource to the
              prefix of the filename (a timestamp will be appended to the
              actual name).

              The default is an empty string, i.e., ``'', However, when the
              print-immediate action is invoked, if the string is empty,
              then ``__default_class__'' is used.

      printFileOnXError (class PrintFileOnXError)
              If xterm exits with an X error, e.g., your connection is



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              broken when the server crashes, it can be told to write the
              contents of the screen to a file.  To enable the feature, set
              this resource to the prefix of the filename (a timestamp will
              be appended to the actual name).

              The default is an empty string, i.e., ``'', which disables
              this feature.  However, when the print-on-error action is
              invoked, if the string is empty, then ``XTermError'' is used.

              These error codes are handled: ERROR_XERROR, ERROR_XIOERROR
              and ERROR_ICEERROR.

      printModeImmediate (class PrintModeImmediate)
              When the print-immediate action is invoked, xterm prints the
              screen contents directly to a file.  You can use the
              printModeImmediate resource to tell it to use escape sequences
              to reconstruct the video attributes and colors.  This uses the
              same values as the printAttributes resource.  The default is
              ``0''.

      printModeOnXError (class PrintModeOnXError)
              Xterm implements the printFileOnXError feature using the
              printer feature, although the output is written directly to a
              file.  You can use the printModeOnXError resource to tell it
              to use escape sequences to reconstruct the video attributes
              and colors.  This uses the same values as the printAttributes
              resource.  The default is ``0''.

      printOptsImmediate (class PrintOptsImmediate)
              Specify the range of text which is printed to a file when the
              print-immediate action is invoked.

              +   If zero (0), then this selects the current (visible
                  screen) plus the saved lines, except if the alternate
                  screen is being used.  In that case, only the alternate
                  screen is selected.

              +   If nonzero, the bits of this resource value (checked in
                  descending order) select the range:

                  8  selects the saved lines.

                  4  selects the alternate screen.

                  2  selects the normal screen.

                  1  selects the current screen, which can be either the
                     normal or alternate screen.




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                                __app_date__



              The default is ``9'', which selects the current visible screen
              plus saved lines, with no special case for the alternated
              screen.

      printOptsOnXError (class PrintOptsOnXError)
              Specify the range of text which is printed to a file when the
              print-on-error action is invoked.  The resource value is
              interpreted the same as in printOptsImmediate.

              The default is ``9'', which selects the current visible screen
              plus saved lines, with no special case for the alternated
              screen.

      printerAutoClose (class PrinterAutoClose)
              If ``true'', xterm will close the printer (a pipe) when the
              application switches the printer offline with a Media Copy
              command.  The default is ``false''.

      printerCommand (class PrinterCommand)
              Specifies a shell command to which xterm will open a pipe when
              the first MC (Media Copy) command is initiated.  The default
              is an empty string, i.e., ``''.  If the resource value is
              given as an empty string, the printer is disabled.

      printerControlMode (class PrinterControlMode)
              Specifies the printer control mode.  A ``1'' selects autoprint
              mode, which causes xterm to print a line from the screen when
              you move the cursor off that line with a line feed, form feed
              or vertical tab character, or an autowrap occurs.  Autoprint
              mode is overridden by printer controller mode (a ``2''), which
              causes all of the output to be directed to the printer.  The
              default is ``0''.

      printerExtent (class PrinterExtent)
              Controls whether a print page function will print the entire
              page (true), or only the portion within the scrolling margins
              (false).  The default is ``false''.

      printerFormFeed (class PrinterFormFeed)
              Controls whether a form feed is sent to the printer at the end
              of a print page function.  The default is ``false''.

      printerNewLine (class PrinterNewLine)
              Controls whether a newline is sent to the printer at the end
              of a print page function.  The default is ``true''.

      privateColorRegisters (class PrivateColorRegisters)
              If xterm is configured to support ReGIS or SIXEL graphics,
              this controls whether xterm allocates separate color registers



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                                __app_date__



              for each sixel device control string, e.g., for DECGCI.  If
              not true, color registers are allocated only once, when the
              terminal is reset, and color changes  in  any  graphic  affect
              all graphics.  The default is ``true''.

      quietGrab (class QuietGrab)
              Controls whether the cursor is repainted when NotifyGrab and
              NotifyUngrab event types are received during change of focus.
              The default is ``false''.

      regisDefaultFont (class RegisDefaultFont)
              If xterm is configured to support ReGIS graphics, this
              resource tells xterm which font to use if the ReGIS data does
              not specify one.  No default value is specified; xterm accepts
              a TrueType font specification as in the faceName resource.

              If no value is specified, xterm draws a bitmap indicating a
              missing character.

      regisScreenSize (class RegisScreenSize)
              If xterm is configured to support ReGIS graphics, this
              resource tells xterm the default size (in pixels) for these
              graphics, which also sets the default coordinate space to
              [0,0] (upper-left) and [width,height] (lower-right).

              The application using ReGIS may use the ``A'' option of the
              ``S'' command to adjust the coordinate space or change the
              addressable portion of the screen.

              The default is ``1000x1000'' (given as width by height).

              Xterm accepts a special resource value ``auto'', which tells
              xterm to use the decTerminalID resource to set the default
              size based on the hardware terminal's limits.  Those limits
              are the same as for the maxGraphicSize resource.

      renderFont (class RenderFont)
              If xterm is built with the Xft library, this controls whether
              the faceName resource is used.  The default is ``default''.

              The resource values are strings, evaluated as booleans after
              startup.

              false
                   disable the feature and use the normal (bitmap) font.

              true
                   startup using the TrueType font specified by the faceName
                   and faceSize resource settings.  If there is no value for



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                   faceName, disable the feature and use the normal (bitmap)
                   font.

                   After startup, you can still switch to/from the bitmap
                   font using the ``TrueType Fonts'' menu entry.

              default
                   startup using the normal (bitmap) font, but enable the
                   ``TrueType Fonts'' menu entry to allow runtime switching
                   to/from TrueType fonts.

                   If there is no faceName resource set, then runtime
                   switching to TrueType fonts is disabled.  Xterm has a
                   separate  compiled-in value for faceName for the special
                   case where renderFont is ``default''.  That is normally
                   ``mono''.

      resizeGravity (class ResizeGravity)
              Affects the behavior when the window is resized to be taller
              or shorter.  NorthWest specifies that the top line of text on
              the screen stay fixed.  If the window is made shorter, lines
              are dropped from the bottom; if the window is made taller,
              blank lines are added at the bottom.  This is compatible with
              the behavior in R4.  SouthWest (the default) specifies that
              the bottom line of text on the screen stay fixed.  If the
              window is made taller, additional saved lines will be scrolled
              down onto the screen; if the window is made shorter, lines
              will be scrolled off the top of the screen, and the top saved
              lines will be dropped.

      retryInputMethod (class RetryInputMethod)
              Tells xterm how many times to retry, in case the input-method
              server is not responding.  This is a different issue than
              unsupported preedit type, etc.  You may encounter retries if
              your X configuration (and its libraries) are missing pieces.
              Setting this resource to zero ``0'' will cancel the retrying.
              The default is ``3''.

      reverseVideo (class ReverseVideo)
              Specifies whether or not reverse video should be simulated.
              The default is ``false''.

              There are several aspects to reverse video in xterm:

              +   The command-line -rv option tells the X libraries to
                  reverse the foreground and background colors.  Xterm's
                  command-line options set resource values.  In particular,
                  the X Toolkit sets the reverseVideo resource when the -rv
                  option is used.



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                                __app_date__



              +   If the user has also used command-line options -fg or -bg
                  to set the foreground and background colors, xterm does
                  not see these options directly.  Instead, it examines the
                  resource values to reconstruct the command-line options,
                  and determine which of the colors is the user's intended
                  foreground, etc.  Their actual values are irrelevant to
                  the reverse video function; some users prefer the X
                  defaults (black text on a white background), others prefer
                  white text on a black background.

              +   After startup, the user can toggle the ``Enable Reverse
                  Video'' menu entry.  This exchanges the current foreground
                  and background colors of the VT100 widget, and repaints
                  the screen.  Because of the X resource hierarchy, the
                  reverseVideo resource applies to more than the VT100
                  widget.

              Programs running in an xterm can also use control sequences to
              enable the VT100 reverse video mode.  These are independent of
              the reverseVideo resource and the menu entry.  Xterm exchanges
              the current foreground and background colors when drawing text
              affected by these control sequences.

              Other control sequences can alter the foreground and
              background colors which are used:

              +   Programs can also use the ANSI color control sequences to
                  set the foreground and background colors.

              +   Extensions to the ANSI color controls (such as 16-, 88- or
                  256-colors) are treated similarly to the ANSI control.

              +   Using other control sequences (the ``dynamic colors''
                  feature), a program can change the foreground and
                  background colors.

      reverseWrap (class ReverseWrap)
              Specifies whether or not reverse-wraparound should be enabled.
              This corresponds to xterm's private mode 45.  The default is
              ``false''.

      rightScrollBar (class RightScrollBar)
              Specifies whether or not the scrollbar should be displayed on
              the right rather than the left.  The default is ``false''.

      saveLines (class SaveLines)
              Specifies the number of lines to save beyond the top of the
              screen when a scrollbar is turned on.  The default is ``64''.




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      scrollBar (class ScrollBar)
              Specifies whether or not the scrollbar should be displayed.
              The default is ``false''.

      scrollBarBorder (class ScrollBarBorder)
              Specifies the width of the scrollbar border.  Note that this
              is drawn to overlap the border of the xterm window.  Modifying
              the scrollbar's border affects only the line between the VT100
              widget and the scrollbar.  The default value is 1.

      scrollKey (class ScrollCond)
              Specifies whether or not pressing a key should automatically
              cause the scrollbar to go to the bottom of the scrolling
              region.  This corresponds to xterm's private mode 1011.  The
              default is ``false''.

      scrollLines (class ScrollLines)
              Specifies the number of lines that the scroll-back and
              scroll-forw actions should use as a default.  The default
              value is 1.

      scrollTtyOutput (class ScrollCond)
              Specifies whether or not output to the terminal should
              automatically cause the scrollbar to go to the bottom of the
              scrolling region.  The default is ``true''.

      selectToClipboard (class SelectToClipboard)
              Tells xterm whether to use the PRIMARY or CLIPBOARD for SELECT
              tokens in the selection mechanism.  The set-select action can
              change this at runtime, allowing the user to work with
              programs that handle only one of these mechanisms.  The
              default is ``false'', which tells it to use PRIMARY.

      shiftFonts (class ShiftFonts)
              Specifies whether to enable the actions larger-vt-font() and
              smaller-vt-font(), which are normally bound to the shifted
              KP_Add and KP_Subtract.  The default is ``true''.

      showBlinkAsBold (class ShowBlinkAsBold)
              Tells xterm whether to display text with blink-attribute the
              same as bold.  If xterm has not been configured to support
              blinking text, the default is ``true'', which corresponds to
              older versions of xterm, otherwise the default is ``false''.

      showMissingGlyphs (class ShowMissingGlyphs)
              Tells xterm whether to display a box outlining places where a
              character has been used that the font does not represent.  The
              default is ``false''.




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                                __app_date__



      showWrapMarks (class ShowWrapMarks)
              For debugging xterm and applications that may manipulate the
              wrapped-line flag by writing text at the right margin, show a
              mark on the right inner-border of the window.  The mark shows
              which lines have the flag set.

      signalInhibit (class SignalInhibit)
              Specifies whether or not the entries in the Main Options menu
              for sending signals to xterm should be disallowed.  The
              default is ``false''.

      sixelScrolling (class SixelScrolling)
              If xterm is configured to support SIXEL graphics, this
              resource tells it whether to scroll up one line at a time when
              sixels would be written past the bottom line on the window.
              The default is ``false''.

      sixelScrollsRight (class SixelScrollsRight)
              If xterm is configured to support SIXEL graphics, this
              resource tells it whether to scroll to the right as needed to
              keep the current position visible rather than truncate the
              plot on the on the right.  The default is ``false''.

      tekGeometry (class Geometry)
              Specifies the preferred size and position of the Tektronix
              window.  There is no default for this resource.

      tekInhibit (class TekInhibit)
              Specifies whether or not the escape sequence to enter
              Tektronix mode should be ignored.  The default is ``false''.

      tekSmall (class TekSmall)
              Specifies whether or not the Tektronix mode window should
              start in its smallest size if no explicit geometry is given.
              This is useful when running xterm on displays with small
              screens.  The default is ``false''.

      tekStartup (class TekStartup)
              Specifies whether or not xterm should start up in Tektronix
              mode.  The default is ``false''.

      tiXtraScroll (class TiXtraScroll)
              Specifies whether xterm should scroll to a new page when
              processing the ti termcap entry, i.e., the private modes 47,
              1047 or 1049.  This is only in effect if titeInhibit is
              ``true'', because the intent of this option is to provide a
              picture of the full-screen application's display on the
              scrollback without wiping out the text that would be shown
              before the application was initialized.  The default for this



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                                __app_date__



              resource is ``false''.

      titeInhibit (class TiteInhibit)
              Originally specified whether or not xterm should remove ti and
              te termcap entries (used to switch between alternate screens
              on startup of many screen-oriented programs) from the TERMCAP
              string.

              TERMCAP is used rarely now, but xterm supports the feature on
              modern systems:

              +   If set, xterm also ignores the escape sequence to switch
                  to the alternate screen.

              +   Xterm supports terminfo in a different way, supporting
                  composite control sequences (also known as private modes)
                  1047, 1048 and 1049 which have the same effect as the
                  original 47 control sequence.

              The default for this resource is ``false''.

      titleModes (class TitleModes)
              Tells xterm whether to accept or return window- and icon-
              labels in ISO-8859-1 (the default) or UTF-8.  Either can be
              encoded in hexadecimal.  The default for this resource is
              ``0''.

              Each bit (bit ``0'' is 1, bit ``1'' is 2, etc.) corresponds to
              one of the parameters set by the title modes control sequence:

              0    Set window/icon labels using hexadecimal

              1    Query window/icon labels using hexadecimal

              2    Set window/icon labels using UTF-8 (overrides utf8Title
                   resource).

              3    Query window/icon labels using UTF-8

      translations (class Translations)
              Specifies the key and button bindings for menus, selections,
              ``programmed strings'', etc.  The translations resource, which
              provides much of xterm's configurability, is a feature of the
              X Toolkit Intrinsics library (Xt).  See the Actions section.

      trimSelection (class TrimSelection)
              If you set highlightSelection, you can see the text which is
              selected, including any trailing spaces.  Clearing the screen
              (or a line) resets it to a state containing no spaces.  Some



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              lines may contain trailing spaces when an application writes
              them to the screen.  However, you may not wish to paste lines
              with trailing spaces.  If this resource is true, xterm will
              trim trailing spaces from text which is selected.  It does not
              affect spaces which result in a wrapped line, nor will it trim
              the trailing newline from your selection.  The default is
              ``false''.

      underLine (class UnderLine)
              This specifies whether or not text with the underline
              attribute should be underlined.  It may be desirable to
              disable underlining when color is being used for the underline
              attribute.  The default is ``true''.

      useClipping (class UseClipping)
              Tell xterm whether to use clipping to keep from producing dots
              outside the text drawing area.  Originally used to work around
              for overstriking effects, this is also needed to work with
              some incorrectly-sized fonts.  The default is ``true''.

      utf8 (class Utf8)
              This specifies whether xterm will run in UTF-8 mode.  If you
              set this resource, xterm also sets the wideChars resource as a
              side-effect.  The resource can be set via the menu entry
              ``UTF-8 Encoding''.  The default is ``default''.

              Xterm accepts either a keyword (ignoring case) or the number
              shown in parentheses:

              false (0)
                 UTF-8 mode is initially off.  The command-line option +u8
                 sets the resource to this value.  Escape sequences for
                 turning UTF-8 mode on/off are allowed.

              true (1)
                 UTF-8 mode is initially on.  Escape sequences for turning
                 UTF-8 mode on/off are allowed.

              always (2)
                 The command-line option -u8 sets the resource to this
                 value.  Escape sequences for turning UTF-8 mode on/off are
                 ignored.

              default (3)
                 This is the default value of the resource.  It is changed
                 during initialization depending on whether the locale
                 resource was set, to false (0) or always (2).  See the
                 locale resource for additional discussion of non-UTF-8
                 locales.



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              If you want to set the value of utf8, it should be in this
              range.  Other nonzero values are treated the same as ``1'',
              i.e., UTF-8 mode is initially on, and escape sequences for
              turning UTF-8 mode on/off are allowed.

      utf8Fonts (class Utf8Fonts)
              See the discussion of the locale resource.  This specifies
              whether xterm will use UTF-8 fonts specified via resource
              patterns such as ``*vt100.utf8Fonts.font'' or normal (ISO-
              8859-1) fonts via patterns such as ``*vt100.font''.  The
              resource can be set via the menu entry ``UTF-8 Fonts''.  The
              default is ``default''.

              Xterm accepts either a keyword (ignoring case) or the number
              shown in parentheses:

              false (0)
                   Use the ISO-8859-1 fonts.  The menu entry is enabled,
                   allowing the choice of fonts to be changed at runtime.

              true (1)
                   Use the UTF-8 fonts.  The menu entry is enabled, allowing
                   the choice of fonts to be changed at runtime.

              always (2)
                   Always use the UTF-8 fonts.  This also disables the menu
                   entry.

              default (3)
                   At startup, the resource is set to true or false,
                   according to the effective value of the utf8 resource.

      utf8Latin1 (class Utf8Latin1)
              If true, allow an ISO-8859-1 normal font to be combined with
              an ISO-10646-1 font if the latter is given via the -fw option
              or its corresponding resource value.  The default is
              ``false''.

      utf8SelectTypes (class Utf8SelectTypes)
              Override xterm's default selection target list (see
              SELECT/PASTE) for selections in wide-character (UTF-8) mode.
              The default is an empty string, i.e., ``'', which does not
              override anything.

      utf8Title (class Utf8Title)
              Applications can set xterm's title by writing a control
              sequence.  Normally this control sequence follows the VT220
              convention, which encodes the string in ISO-8859-1 and allows
              for an 8-bit string terminator.  If xterm is started in a



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              UTF-8 locale, it translates the ISO-8859-1 string to UTF-8 to
              work with the X libraries which assume the string is UTF-8.

              However, some users may wish to write a title string encoded
              in UTF-8.  The window manager is responsible for drawing
              window titles.  Some window managers (not all) support UTF-8
              encoding of window titles.  Set this resource to ``true'' to
              allow UTF-8 encoded title strings.  That cancels the
              translation to UTF-8, allowing UTF-8 strings to be displayed
              as is.

              This feature is available as a menu entry, since it is related
              to the particular applications you are running within xterm.
              You can also use a control sequence (see the discussion of
              ``Title Modes'' in Xterm Control Sequences), to set an
              equivalent flag.  The titleModes resource sets the same value,
              which overrides this resource.

              The default is ``false''.

      veryBoldColors (class VeryBoldColors)
              Specifies whether to combine video attributes with colors
              specified by colorBD, colorBL, colorIT, colorRV, and colorUL.
              The resource value is the sum of values for each attribute:
                1 for reverse,
                2 for underline,
                4 for bold,
                8 for blink, and
                512 for italic

              The default is ``0''.

      visualBell (class VisualBell)
              Specifies whether or not a visible bell (i.e., flashing)
              should be used instead of an audible bell when Control-G is
              received.  The default is ``false'', which tells xterm to use
              an audible bell.

      visualBellDelay (class VisualBellDelay)
              Number of milliseconds to delay when displaying a visual bell.
              Default is 100.  If set to zero, no visual bell is displayed.
              This is useful for very slow displays, e.g., an LCD display on
              a laptop.

      visualBellLine (class VisualBellLine)
              Specifies whether to flash only the current line when
              displaying a visual bell rather than flashing the entire
              screen: The default is ``false'', which tells xterm to flash
              the entire screen.



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 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



      vt100Graphics (class VT100Graphics)
              This specifies whether xterm will interpret VT100 graphic
              character escape sequences while in UTF-8 mode.  The default
              is ``true'', to provide support for various legacy
              applications.

      wideBoldFont (class WideBoldFont)
              This option specifies the font to be used for displaying bold
              wide text.  By default, it will attempt to use a font twice as
              wide as the font that will be used to draw bold text.  If no
              double-width font is found, it will improvise, by stretching
              the bold font.

      wideChars (class WideChars)
              Specifies if xterm should respond to control sequences that
              process 16-bit characters.  The default is ``false''.

      wideFont (class WideFont)
              This option specifies the font to be used for displaying wide
              text.  By default, it will attempt to use a font twice as wide
              as the font that will be used to draw normal text.  If no
              double-width font is found, it will improvise, by stretching
              the normal font.

      ximFont (class XimFont)
              This option specifies the font to be used for displaying the
              preedit string in the ``OverTheSpot'' input method.

              In ``OverTheSpot'' preedit type, the preedit (preconversion)
              string is displayed at the position of the cursor.  It is the
              XIM server's responsibility to display the preedit string.
              The XIM client must inform the XIM server of the cursor
              position.  For best results, the preedit string must be
              displayed with a proper font.  Therefore, xterm informs the
              XIM server of the proper font.  The font is be supplied by a
              "fontset", whose default value is ``*''.  This matches every
              font, the X library automatically chooses fonts with proper
              charsets.  The ximFont resource is provided to override this
              default font setting.

    Tek4014 Widget Resources
      The following resources are specified as part of the tek4014 widget
      (class Tek4014).  These are specified by patterns such as
      ``__default_class__.tek4014.NAME'':

      font2 (class Font)
              Specifies font number 2 to use in the Tektronix window.

      font3 (class Font)



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                                __app_date__



              Specifies font number 3 to use in the Tektronix window.

      fontLarge (class Font)
              Specifies the large font to use in the Tektronix window.

      fontSmall (class Font)
              Specifies the small font to use in the Tektronix window.

      ginTerminator (class GinTerminator)
              Specifies what character(s) should follow a GIN report or
              status report.  The possibilities are ``none'', which sends no
              terminating characters, ``CRonly'', which sends CR, and
              ``CR&EOT'', which sends both CR and EOT.  The default is
              ``none''.

      height (class Height)
              Specifies the height of the Tektronix window in pixels.

      initialFont (class InitialFont)
              Specifies which of the four Tektronix fonts to use initially.
              Values are the same as for the set-tek-text action.  The
              default is ``large''.

      width (class Width)
              Specifies the width of the Tektronix window in pixels.

    Menu Resources
      The resources that may be specified for the various menus are
      described in the documentation for the Athena SimpleMenu widget.  The
      name and classes of the entries in each of the menus are listed below.
      Resources named ``lineN'' where N is a number are separators with
      class SmeLine.

      As with all X resource-based widgets, the labels mentioned are
      customary defaults for the application.

      The Main Options menu (widget name mainMenu) has the following
      entries:

      toolbar (class SmeBSB)
              This entry invokes the set-toolbar(toggle) action.

      securekbd (class SmeBSB)
              This entry invokes the secure() action.

      allowsends (class SmeBSB)
              This entry invokes the allow-send-events(toggle) action.

      redraw (class SmeBSB)



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                                __app_date__



              This entry invokes the redraw() action.

      logging (class SmeBSB)
              This entry invokes the logging(toggle) action.

      print-immediate (class SmeBSB)
              This entry invokes the print-immediate() action.

      print-on-error (class SmeBSB)
              This entry invokes the print-on-error() action.

      print (class SmeBSB)
              This entry invokes the print() action.

      print-redir (class SmeBSB)
              This entry invokes the print-redir() action.

      dump-html (class SmeBSB)
              This entry invokes the dump-html() action.

      dump-svg (class SmeBSB)
              This entry invokes the dump-svg() action.

      8-bit-control (class SmeBSB)
              This entry invokes the set-8-bit-control(toggle) action.

      backarrow key (class SmeBSB)
              This entry invokes the set-backarrow(toggle) action.

      num-lock (class SmeBSB)
              This entry invokes the set-num-lock(toggle) action.

      alt-esc (class SmeBSB)
              This entry invokes the alt-sends-escape(toggle) action.

      meta-esc (class SmeBSB)
              This entry invokes the meta-sends-escape(toggle) action.

      delete-is-del (class SmeBSB)
              This entry invokes the delete-is-del(toggle) action.

      oldFunctionKeys (class SmeBSB)
              This entry invokes the set-old-function-keys(toggle) action.

      hpFunctionKeys (class SmeBSB)
              This entry invokes the set-hp-function-keys(toggle) action.

      scoFunctionKeys (class SmeBSB)
              This entry invokes the set-sco-function-keys(toggle) action.



                                   - 86 -       Formatted:  October 24, 2018






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                                __app_date__



      sunFunctionKeys (class SmeBSB)
              This entry invokes the set-sun-function-keys(toggle) action.

      sunKeyboard (class SmeBSB)
              This entry invokes the sunKeyboard(toggle) action.

      suspend (class SmeBSB)
              This entry invokes the send-signal(tstp) action on systems
              that support job control.

      continue (class SmeBSB)
              This entry invokes the send-signal(cont) action on systems
              that support job control.

      interrupt (class SmeBSB)
              This entry invokes the send-signal(int) action.

      hangup (class SmeBSB)
              This entry invokes the send-signal(hup) action.

      terminate (class SmeBSB)
              This entry invokes the send-signal(term) action.

      kill (class SmeBSB)
              This entry invokes the send-signal(kill) action.

      quit (class SmeBSB)
              This entry invokes the quit() action.

      The VT Options menu (widget name vtMenu) has the following entries:

      scrollbar (class SmeBSB)
              This entry invokes the set-scrollbar(toggle) action.

      jumpscroll (class SmeBSB)
              This entry invokes the set-jumpscroll(toggle) action.

      reversevideo (class SmeBSB)
              This entry invokes the set-reverse-video(toggle) action.

      autowrap (class SmeBSB)
              This entry invokes the set-autowrap(toggle) action.

      reversewrap (class SmeBSB)
              This entry invokes the set-reversewrap(toggle) action.

      autolinefeed (class SmeBSB)
              This entry invokes the set-autolinefeed(toggle) action.




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 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



      appcursor (class SmeBSB)
              This entry invokes the set-appcursor(toggle) action.

      appkeypad (class SmeBSB)
              This entry invokes the set-appkeypad(toggle) action.

      scrollkey (class SmeBSB)
              This entry invokes the set-scroll-on-key(toggle) action.

      scrollttyoutput (class SmeBSB)
              This entry invokes the set-scroll-on-tty-output(toggle)
              action.

      allow132 (class SmeBSB)
              This entry invokes the set-allow132(toggle) action.

      cursesemul (class SmeBSB)
              This entry invokes the set-cursesemul(toggle) action.

      keepSelection (class SmeBSB)
              This entry invokes the set-keep-selection(toggle) action.

      selectToClipboard (class SmeBSB)
              This entry invokes the set-keep-clipboard(toggle) action.

      visualbell (class SmeBSB)
              This entry invokes the set-visual-bell(toggle) action.

      bellIsUrgent (class SmeBSB)
              This entry invokes the set-bellIsUrgent(toggle) action.

      poponbell (class SmeBSB)
              This entry invokes the set-pop-on-bell(toggle) action.

      cursorblink (class SmeBSB)
              This entry invokes the set-cursorblink(toggle) action.

      titeInhibit (class SmeBSB)
              This entry invokes the set-titeInhibit(toggle) action.

      activeicon (class SmeBSB)
              This entry toggles active icons on and off if this feature was
              compiled into xterm.  It is enabled only if xterm was started
              with the command line option +ai or the activeIcon resource is
              set to ``true''.

      softreset (class SmeBSB)
              This entry invokes the soft-reset() action.




                                   - 88 -       Formatted:  October 24, 2018






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                                __app_date__



      hardreset (class SmeBSB)
              This entry invokes the hard-reset() action.

      clearsavedlines (class SmeBSB)
              This entry invokes the clear-saved-lines() action.

      tekshow (class SmeBSB)
              This entry invokes the set-visibility(tek,toggle) action.

      tekmode (class SmeBSB)
              This entry invokes the set-terminal-type(tek) action.

      vthide (class SmeBSB)
              This entry invokes the set-visibility(vt,off) action.

      altscreen (class SmeBSB)
              This entry invokes the set-altscreen(toggle) action.

      sixelScrolling (class SmeBSB)
              This entry invokes the set-sixel-scrolling(toggle) action.

      privateColorRegisters (class SmeBSB)
              This entry invokes the set-private-colors(toggle) action.

      The VT Fonts menu (widget name fontMenu) has the following entries:

      fontdefault (class SmeBSB)
              This entry invokes the set-vt-font(d) action, setting the font
              using the font (default) resource, e.g., ``Default'' in the
              menu.

      font1 (class SmeBSB)
              This entry invokes the set-vt-font(1) action, setting the font
              using the font1 resource, e.g., ``Unreadable'' in the menu.

      font2 (class SmeBSB)
              This entry invokes the set-vt-font(2) action, setting the font
              using the font2 resource, e.g., ``Tiny'' in the menu.

      font3 (class SmeBSB)
              This entry invokes the set-vt-font(3) action, setting the font
              using the font3 resource, e.g., ``Small'' in the menu.

      font4 (class SmeBSB)
              This entry invokes the set-vt-font(4) action, letting the font
              using the font4 resource, e.g., ``Medium'' in the menu.

      font5 (class SmeBSB)
              This entry invokes the set-vt-font(5) action, letting the font



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                                __app_date__



              using the font5 resource, e.g., ``Large'' in the menu.

      font6 (class SmeBSB)
              This entry invokes the set-vt-font(6) action, letting the font
              using the font6 resource, e.g., ``Huge'' in the menu.

      fontescape (class SmeBSB)
              This entry invokes the set-vt-font(e) action.

      fontsel (class SmeBSB)
              This entry invokes the set-vt-font(s) action.

      allow-bold-fonts (class SmeBSB)
              This entry invokes the allow-bold-fonts(toggle) action.

      font-linedrawing (class SmeBSB)
              This entry invokes the set-font-linedrawing(s) action.

      font-packed (class SmeBSB)
              This entry invokes the set-font-packed(s) action.

      font-doublesize (class SmeBSB)
              This entry invokes the set-font-doublesize(s) action.

      render-font (class SmeBSB)
              This entry invokes the set-render-font(s) action.

      utf8-fonts (class SmeBSB)
              This entry invokes the set-utf8-fonts(s) action.

      utf8-mode (class SmeBSB)
              This entry invokes the set-utf8-mode(s) action.

      utf8-title (class SmeBSB)
              This entry invokes the set-utf8-title(s) action.

      allow-color-ops (class SmeBSB)
              This entry invokes the allow-color-ops(toggle) action.

      allow-font-ops (class SmeBSB)
              This entry invokes the allow-fonts-ops(toggle) action.

      allow-tcap-ops (class SmeBSB)
              This entry invokes the allow-tcap-ops(toggle) action.

      allow-title-ops (class SmeBSB)
              This entry invokes the allow-title-ops(toggle) action.

      allow-window-ops (class SmeBSB)



                                   - 90 -       Formatted:  October 24, 2018






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                                __app_date__



              This entry invokes the allow-window-ops(toggle) action.

      The Tek Options menu (widget name tekMenu) has the following entries:

      tektextlarge (class SmeBSB)
              This entry invokes the set-tek-text(large) action.

      tektext2 (class SmeBSB)
              This entry invokes the set-tek-text(2) action.

      tektext3 (class SmeBSB)
              This entry invokes the set-tek-text(3) action.

      tektextsmall (class SmeBSB)
              This entry invokes the set-tek-text(small) action.

      tekpage (class SmeBSB)
              This entry invokes the tek-page() action.

      tekreset (class SmeBSB)
              This entry invokes the tek-reset() action.

      tekcopy (class SmeBSB)
              This entry invokes the tek-copy() action.

      vtshow (class SmeBSB)
              This entry invokes the set-visibility(vt,toggle) action.

      vtmode (class SmeBSB)
              This entry invokes the set-terminal-type(vt) action.

      tekhide (class SmeBSB)
              This entry invokes the set-visibility(tek,toggle) action.

    Scrollbar Resources
      The following resources are useful when specified for the Athena
      Scrollbar widget:

      thickness (class Thickness)
              Specifies the width in pixels of the scrollbar.

      background (class Background)
              Specifies the color to use for the background of the
              scrollbar.

      foreground (class Foreground)
              Specifies the color to use for the foreground of the
              scrollbar.  The ``thumb'' of the scrollbar is a simple
              checkerboard pattern alternating pixels for foreground and



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                                __app_date__



              background color.

 POINTER USAGE
      Once the VTxxx window is created, xterm allows you to select text and
      copy it within the same or other windows using the pointer or the
      keyboard.

      A ``pointer'' could be a mouse, touchpad or similar device.  X
      applications generally do not care, since they see only button events
      which have

      +   position and

      +   button up/down state

      Xterm can see these events as long as it has focus.

      The keyboard also supplies events, but it is less flexible than the
      pointer for selecting/copying text.

      Events are applied to actions using the translations resource.  See
      Actions for a complete list, and Default Key Bindings for the built-in
      set of translations resources.

    Selection Functions
      The selection functions are invoked when the pointer buttons are used
      with no modifiers, and when they are used with the ``shift'' key.  The
      assignment of the functions described below to keys and buttons may be
      changed through the resource database; see Actions below.

      Pointer button one (usually left)
           is used to save text into the cut buffer:

               ~Meta <Btn1Down>:select-start()

           Move the cursor to beginning of the text, and then hold the
           button down while moving the cursor to the end of the region and
           releasing the button.  The selected text is highlighted and is
           saved in the global cut buffer and made the selection when the
           button is released:

               <BtnUp>:select-end(SELECT, CUT_BUFFER0) \n

           Normally (but see the discussion of on2Clicks, etc):

           +   Double-clicking selects by words.

           +   Triple-clicking selects by lines.




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                                __app_date__



           +   Quadruple-clicking goes back to characters, etc.

           Multiple-click is determined by the time from button up to button
           down, so you can change the selection unit in the middle of a
           selection.  Logical words and lines selected by double- or
           triple-clicking may wrap across more than one screen line if
           lines were wrapped by xterm itself rather than by the application
           running in the window.  If the key/button bindings specify that
           an X selection is to be made, xterm will leave the selected text
           highlighted for as long as it is the selection owner.

      Pointer button two (usually middle)
           ``types'' (pastes) the text from the given selection, if any,
           otherwise from the cut buffer, inserting it as keyboard input:

               ~Ctrl ~Meta <Btn2Up>:insert-selection(SELECT, CUT_BUFFER0)

      Pointer button three (usually right)
           extends the current selection.

               ~Ctrl ~Meta <Btn3Down>:start-extend()

           (Without loss of generality, you can swap ``right'' and ``left''
           everywhere in the rest of this paragraph.)  If pressed while
           closer to the right edge of the selection than the left, it
           extends/contracts the right edge of the selection.  If you
           contract the selection past the left edge of the selection, xterm
           assumes you really meant the left edge, restores the original
           selection, then extends/contracts the left edge of the selection.
           Extension starts in the selection unit mode that the last
           selection or extension was performed in; you can multiple-click
           to cycle through them.

      By cutting and pasting pieces of text without trailing new lines, you
      can take text from several places in different windows and form a
      command to the shell, for example, or take output from a program and
      insert it into your favorite editor.  Since cut buffers are globally
      shared among different applications, you may regard each as a ``file''
      whose contents you know.  The terminal emulator and other text
      programs should be treating it as if it were a text file, i.e., the
      text is delimited by new lines.

    Scrolling
      The scroll region displays the position and amount of text currently
      showing in the window (highlighted) relative to the amount of text
      actually saved.  As more text is saved (up to the maximum), the size
      of the highlighted area decreases.

      Clicking button one with the pointer in the scroll region moves the



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                                __app_date__



      adjacent line to the top of the display window.

      Clicking button three moves the top line of the display window down to
      the pointer position.

      Clicking button two moves the display to a position in the saved text
      that corresponds to the pointer's position in the scrollbar.

    Tektronix Pointer
      Unlike the VTxxx window, the Tektronix window does not allow the
      copying of text.  It does allow Tektronix GIN mode, and in this mode
      the cursor will change from an arrow to a cross.  Pressing any key
      will send that key and the current coordinate of the cross cursor.
      Pressing button one, two, or three will return the letters ``l'',
      ``m'', and ``r'', respectively.  If the ``shift'' key is pressed when
      a pointer button is pressed, the corresponding upper case letter is
      sent.  To distinguish a pointer button from a key, the high bit of the
      character is set (but this is bit is normally stripped unless the
      terminal mode is RAW; see tty(4) for details).

 SELECT/PASTE
      X clients provide select and paste support by responding to requests
      conveyed by the server.

    PRIMARY
      When configured to use the primary selection, (the default) xterm can
      provide the selection data in ways which help to retain character
      encoding information as it is pasted.

      A user ``selects'' text on xterm, which highlights the selected text.
      A subsequent ``paste'' to another client forwards a request to the
      client owning the selection.  If xterm owns the primary selection, it
      makes the data available in the form of one or more ``selection
      targets''.  If it does not own the primary selection, e.g., if it has
      released it or another client has asserted ownership, it relies on
      cut-buffers to pass the data.  But cut-buffers handle only ISO-8859-1
      data (officially - some clients ignore the rules).

    CLIPBOARD
      When configured to use the clipboard (using the selectToClipboard
      resource), the problem with persistence of ownership is bypassed.
      Otherwise, there is no difference regarding the data which can be
      passed via selection.

      The PRIMARY token is a standard X feature, documented in the ICCCM
      (Inter-Client Communication Conventions Manual), which states

           The selection named by the atom PRIMARY is used for all commands
           that take only a single argument and is the principal means of



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                                __app_date__



           communication between clients that use the selection mechanism.

    SELECT
      However, many applications use CLIPBOARD in imitation of other
      windowing systems.  The selectToClipboard resource (and corresponding
      menu entry Select to Clipboard) introduce the SELECT token (known only
      to xterm) which chooses between the PRIMARY and CLIPBOARD tokens.

      Without using this feature, one can use workarounds such as the xclip
      program to show the contents of the X clipboard within an xterm
      window.

    Selection Targets
      The different types of data which are passed depend on what the
      receiving client asks for.  These are termed selection targets.

      When asking for the selection data, xterm tries the following types in
      this order:

           UTF8_STRING
                This is an XFree86 extension, which denotes that the data is
                encoded in UTF-8.  When xterm is built with wide-character
                support, it both accepts and provides this type.

           TEXT the text is in the encoding which corresponds to your
                current locale.

           COMPOUND_TEXT
                this is a format for multiple character set data, such as
                multi-lingual text.  It can store UTF-8 data as a special
                case.

           STRING
                This is Latin 1 (ISO-8859-1) data.

      The middle two (TEXT and COMPOUND_TEXT) are added if xterm is
      configured with the i18nSelections resource set to ``true''.

      UTF8_STRING is preferred (therefore first in the list) since xterm
      stores text as Unicode data when running in wide-character mode, and
      no translation is needed.  On the other hand, TEXT and COMPOUND_TEXT
      may require translation.  If the translation is incomplete, they will
      insert X's ``defaultString'' whose value cannot be set, and may simply
      be empty.  Xterm's defaultString resource specifies the string to use
      for incomplete translations of the UTF8_STRING.

      You can alter the types which xterm tries using the
      eightBitSelectTypes or utf8SelectTypes resources.  For instance, you
      might have some specific locale setting which does not use UTF-8



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                                __app_date__



      encoding.  The resource value is a comma-separated list of the
      selection targets, which consist of the names shown.  You can use the
      special name I18N to denote the optional inclusion of TEXT and
      COMPOUND_TEXT.  The names are matched ignoring case, and can be
      abbreviated.  The default list can be expressed in several ways, e.g.,

           UTF8_STRING,I18N,STRING
           utf8,i18n,string
           u,i,s

    Mouse Protocol
      Applications can send escape sequences to xterm to cause it to send
      escape sequences back to the computer when you press a pointer button,
      or even (depending on which escape sequence) send escape sequences
      back to the computer as you move the pointer.

      These escape sequences and the responses, called the mouse protocol,
      are documented in XTerm Control Sequences.  They do not appear in the
      actions invoked by the translations resource because the resource does
      not change while you run xterm, whereas applications can change the
      mouse prototol (i.e., enable, disable, use different modes).

      However, the mouse protocol is interpreted within the actions that are
      usually associated with the pointer buttons.  Xterm ignores the mouse
      protocol in the insert-selection action if the shift-key is pressed at
      the same time.  It also modifies a few other actions if the shift-key
      is pressed, e.g., suppressing the response with the pointer position,
      though not eliminating changes to the selected text.

 MENUS
      Xterm has four menus, named mainMenu, vtMenu, fontMenu, and tekMenu.
      Each menu pops up under the correct combinations of key and button
      presses.  Each menu is divided into sections, separated by a
      horizontal line.  Some menu entries correspond to modes that can be
      altered.  A check mark appears next to a mode that is currently
      active.  Selecting one of these modes toggles its state.  Other menu
      entries are commands; selecting one of these performs the indicated
      function.

      All of the menu entries correspond to X actions.  In the list below,
      the menu label is shown followed by the action's name in parenthesis.

    Main Options
      The xterm mainMenu pops up when the ``control'' key and pointer button
      one are pressed in a window.  This menu contains items that apply to
      both the VTxxx and Tektronix windows.  There are several sections:

      Commands for managing X events:




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                                __app_date__



           Toolbar (resource toolbar)
                Clicking on the ``Toolbar'' menu entry hides the toolbar if
                it is visible, and shows it if it is not.

           Secure Keyboard (resource securekbd)
                The Secure Keyboard mode is helpful when typing in passwords
                or other sensitive data in an unsecure environment (see
                SECURITY below, but read the limitations carefully).

           Allow SendEvents (resource allowsends)
                Specifies whether or not synthetic key and button events
                generated using the X protocol SendEvent request should be
                interpreted or discarded.  This corresponds to the
                allowSendEvents resource.

           Redraw Window (resource redraw)
                Forces the X display to repaint; useful in some
                environments.

      Commands for capturing output:

           Log to File (resource logging)
                Captures text sent to the screen in a logfile, as in the -l
                logging option.

           Print-All Immediately (resource print-immediate)
                Invokes the print-immediate action, sending the text of the
                current window directly to a file, as specified by the
                printFileImmediate, printModeImmediate and
                printOptsImmediate resources.

           Print-All on Error (resource print-on-error)
                Invokes the print-on-error action, which toggles a flag
                telling xterm that if it exits with an X error, to send the
                text of the current window directly to a file, as specified
                by the printFileOnXError, printModeOnXError and
                printOptsOnXError resources.

           Print Window (resource print)
                Sends the text of the current window to the program given in
                the printerCommand resource.

           Redirect to Printer (resource print-redir)
                This sets the printerControlMode to 0 or 2.  You can use
                this to turn the printer on as if an application had sent
                the appropriate control sequence.  It is also useful for
                switching the printer off if an application turns it on
                without resetting the print control mode.




                                   - 97 -       Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



           XHTML Screen Dump (resource dump-html)
                Available only when compiled with screen dump support.
                Invokes the dump-html action.  This creates an XHTML file
                matching the contents of the current screen, including the
                border, internal border, colors and most attributes: bold,
                italic, underline, faint, strikeout, reverse; blink is
                rendered as white-on-red; double underline is rendered the
                same as underline since there is no portable equivalent in
                CSS 2.2.

                The font is whatever your browser uses for preformatted
                (<pre>) elements.  The XHTML file references a cascading
                style sheet (CSS) named ``xterm.css'' that you can create to
                select a font or override properties.
                The following CSS selectors are used with the expected
                default behavior in the XHTML file:

                In addition you may use


                Attributes faint, reverse and blink are implemented as style
                attributes setting color properties.  All colors are
                specified as RGB percentages in order to support displays
                with 10 bits per RGB.

                The name of the file will be

                    xterm.yyyy.MM.dd.hh.mm.ss.xhtml

                where yyyy, MM, dd, hh, mm and ss are the year, month, day,
                hour, minute and second when the screen dump was performed
                (the file is created in the directory xterm is started in,
                or the home directory for a login xterm).

                The dump-html action can also be triggered using the Media
                Copy control sequence CSI 1 0 i, for example from a shell
                script with

                    printf '\033[10i'

                Only the UTF-8 encoding is supported.

           SVG Screen Dump (resource dump-svg)
                Available only when compiled with screen dump support.
                Invokes the dump-svg action.  This creates a Scalable Vector
                Graphics (SVG) file matching the contents of the current
                screen, including the border, internal border, colors and
                most attributes: bold, italic, underline, double underline,
                faint, strikeout, reverse; blink is rendered as white-on-



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 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



                red.  The font is whatever your renderer uses for the
                monospace font-family.  All colors are specified as RGB
                percentages in order to support displays with 10 bits per
                RGB.

                The name of the file will be

                    xterm.yyyy.MM.dd.hh.mm.ss.svg

                where yyyy, MM, dd, hh, mm and ss are the year, month, day,
                hour, minute and second when the screen dump was performed
                (the file is created in the directory xterm is started in,
                or the home directory for a login xterm).

                The dump-svg action can also be triggered using the Media
                Copy control sequence CSI 1 1 i, for example from a shell
                script with

                    printf '\033[11i'

                Only the UTF-8 encoding is supported.

      Modes for setting keyboard style:

           8-Bit Controls (resource 8-bit-control)
                Enabled for VT220 emulation, this controls whether xterm
                will send 8-bit control sequences rather than using 7-bit
                (ASCII) controls, e.g., sending a byte in the range 128159
                rather than the escape character followed by a second byte.
                Xterm always interprets both 8-bit and 7-bit control
                sequences (see Xterm Control Sequences).  This corresponds
                to the eightBitControl resource.

           Backarrow Key (BS/DEL) (resource backarrow key)
                Modifies the behavior of the backarrow key, making it
                transmit either a backspace (8) or delete (127) character.
                This corresponds to the backarrowKey resource.

           Alt/NumLock Modifiers (resource num-lock)
                Controls the treatment of Alt- and NumLock-key modifiers.
                This corresponds to the numLock resource.

           Meta Sends Escape (resource meta-esc)
                Controls whether Meta keys are converted into a two-
                character sequence with the character itself preceded by
                ESC.  This corresponds to the metaSendsEscape resource.

           Delete is DEL (resource delete-is-del)
                Controls whether the Delete key on the editing keypad should



                                   - 99 -       Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



                send DEL (127) or the VT220-style Remove escape sequence.
                This corresponds to the deleteIsDEL resource.

           Old Function-Keys (resource oldFunctionKeys)

           HP Function-Keys (resource hpFunctionKeys)

           SCO Function-Keys (resource scoFunctionKeys)

           Sun Function-Keys (resource sunFunctionKeys)

           VT220 Keyboard (resource sunKeyboard)
                These act as a radio-button, selecting one style for the
                keyboard layout.  The layout corresponds to more than one
                resource setting: sunKeyboard, sunFunctionKeys,
                scoFunctionKeys and hpFunctionKeys.

      Commands for process signalling:

           Send STOP Signal (resource suspend)

           Send CONT Signal (resource continue)

           Send INT Signal (resource interrupt)

           Send HUP Signal (resource hangup)

           Send TERM Signal (resource terminate)

           Send KILL Signal (resource kill)
                These send the SIGTSTP, SIGCONT, SIGINT, SIGHUP, SIGTERM and
                SIGKILL signals respectively, to the process group of the
                process running under xterm (usually the shell).  The
                SIGCONT function is especially useful if the user has
                accidentally typed CTRL-Z, suspending the process.

           Quit (resource quit)
                Stop processing X events except to support the -hold option,
                and then send a SIGHUP signal to the process group of the
                process running under xterm (usually the shell).

    VT Options
      The xterm vtMenu sets various modes in the VTxxx emulation, and is
      popped up when the ``control'' key and pointer button two are pressed
      in the VTxxx window.

      VTxxx Modes:

           Enable Scrollbar (resource scrollbar)



                                   - 100 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



                Enable (or disable) the scrollbar.  This corresponds to the
                -sb option and the scrollBar resource.

           Enable Jump Scroll (resource jumpscroll)
                Enable (or disable) jump scrolling.  This corresponds to the
                -j option and the jumpScroll resource.

           Enable Reverse Video (resource reversevideo)
                Enable (or disable) reverse-video.  This corresponds to the
                -rv option and the reverseVideo resource.

           Enable Auto Wraparound (resource autowrap)
                Enable (or disable) auto-wraparound.  This corresponds to
                the -aw option and the autoWrap resource.

           Enable Reverse Wraparound (resource reversewrap)
                Enable (or disable) reverse wraparound.  This corresponds to
                the -rw option and the reverseWrap resource.

           Enable Auto Linefeed (resource autolinefeed)
                Enable (or disable) auto-linefeed.  This is the VT102 NEL
                function, which causes the emulator to emit a linefeed after
                each carriage return.  There is no corresponding command-
                line option or resource setting.

           Enable Application Cursor Keys (resource appcursor)
                Enable (or disable) application cursor keys.  This
                corresponds to the appcursorDefault resource.  There is no
                corresponding command-line option.

           Enable Application Keypad (resource appkeypad)
                Enable (or disable) application keypad keys.  This
                corresponds to the appkeypadDefault resource.  There is no
                corresponding command-line option.

           Scroll to Bottom on Key Press
                Enable (or disable) scrolling to the bottom of the scrolling
                region on a keypress.  This corresponds to the -sk option
                and the scrollKey resource.

                As a special case, the XON / XOFF keys (control/S and
                control/Q) are ignored.

           Scroll to Bottom on Tty Output
                Enable (or disable) scrolling to the bottom of the scrolling
                region on output to the terminal.  This corresponds to the
                -si option and the scrollTtyOutput resource.

           Allow 80/132 Column Switching (resource allow132)



                                   - 101 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



                Enable (or disable) switching between 80 and 132 columns.
                This corresponds to the -132 option and the c132 resource.

           Keep Selection (resource keepSelection)
                Tell xterm whether to disown the selection when it stops
                highlighting it, e.g., when an application modifies the
                display so that it no longer matches the text which has been
                highlighted.  As long as xterm continues to own the
                selection, it can provide the corresponding text to other
                clients via cut/paste.  This corresponds to the
                keepSelection resource.  There is no corresponding command-
                line option.

           Select to Clipboard (resource selectToClipboard)
                Tell xterm whether to use the PRIMARY or CLIPBOARD for
                SELECT tokens in the translations resource which maps
                keyboard and mouse actions to select/paste actions.  This
                corresponds to the selectToClipboard resource.  There is no
                corresponding command-line option.

           Enable Visual Bell (resource visualbell)
                Enable (or disable) visible bell (i.e., flashing) instead of
                an audible bell.  This corresponds to the -vb option and the
                visualBell resource.

           Enable Bell Urgency (resource bellIsUrgent)
                Enable (or disable) Urgency window manager hint when
                Control-G is received.  This corresponds to the bellIsUrgent
                resource.

           Enable Pop on Bell (resource poponbell)
                Enable (or disable) raising of the window when Control-G is
                received.  This corresponds to the -pop option and the
                popOnBell resource.

           Enable Blinking Cursor (resource cursorblink)
                Enable (or disable) the blinking-cursor feature.  This
                corresponds to the -bc option and the cursorBlink resource.
                There are also escape sequences (see Xterm Control
                Sequences):

                +   If the cursorBlinkXOR resource is set, the menu entry
                    and the escape sequence states will be XOR'd: if both
                    are enabled, the cursor will not blink, if only one is
                    enabled, the cursor will blink.

                +   If the cursorBlinkXOR is not set; if either the menu
                    entry or the escape sequence states are set, the cursor
                    will blink.



                                   - 102 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



                In either case, the checkbox for the menu shows the state of
                the cursorBlink resource, which may not correspond to what
                the cursor is actually doing.

           Enable Alternate Screen Switching (resource titeInhibit)
                Enable (or disable) switching between the normal and
                alternate screens.  This corresponds to the titeInhibit
                resource.  There is no corresponding command-line option.

           Enable Active Icon (resource activeicon)
                Enable (or disable) the active-icon feature.  This
                corresponds to the -ai option and the activeIcon resource.

           Sixel Scrolling (resource sixelScrolling)
                When enabled, sixel graphics are positioned at the current
                text cursor location, scroll the image vertically if larger
                than the screen, and leave the text cursor at the start of
                the next complete line after the image when returning to
                text mode (this is the default).  When disabled, sixel
                graphics are positioned at the upper left of the screen, are
                cropped to fit the screen, and do not affect the text cursor
                location.  This corresponds to the sixelScrolling resource.
                There is no corresponding command-line option.

           Private Color Registers (resource privateColorRegisters)
                If xterm is configured to support ReGIS graphics, this
                controls whether a private color palette can be used.

                When enabled, each graphic image uses a separate set of
                color registers, so that it essentially has a private
                palette (this is the default).  If it is not set, all
                graphics images share a common set of registers which is how
                sixel and ReGIS graphics worked on actual hardware.  The
                default is likely a more useful mode on modern TrueColor
                hardware.

                This corresponds to the privateColorRegisters resource.
                There is no corresponding command-line option.

      VTxxx Commands:

           Do Soft Reset (resource softreset)
                Reset scroll regions.  This can be convenient when some
                program has left the scroll regions set incorrectly (often a
                problem when using VMS or TOPS-20).  This corresponds to the
                VT220 DECSTR control sequence.

           Do Full Reset (resource hardreset)
                The full reset entry will clear the screen, reset tabs to



                                   - 103 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



                every eight columns, and reset the terminal modes (such as
                wrap and smooth scroll) to their initial states just after
                xterm has finished processing the command line options.
                This corresponds to the VT102 RIS control sequence, with a
                few obvious differences.  For example, your session is not
                disconnected as a real VT102 would do.

           Reset and Clear Saved Lines (resource
                Perform a full reset, and also clear the saved lines.

      Commands for setting the current screen:

           Show Tek Window (resource tekshow)
                When enabled, pops the Tektronix 4014 window up (makes it
                visible).  When disabled, hides the Tektronix 4014 window.

           Switch to Tek Mode (resource tekmode)
                When enabled, pops the Tektronix 4014 window up if it is not
                already visible, and switches the input stream to that
                window.  When disabled, hides the Tektronix 4014 window and
                switches input back to the VTxxx window.

           Hide VT Window (resource vthide)
                When enabled, hides the VTxxx window, shows the Tektronix
                4014 window if it was not already visible and switches the
                input stream to that window.  When disabled, shows the VTxxx
                window, and switches the input stream to that window.

           Show Alternate Screen (resource altscreen)
                When enabled, shows the alternate screen.  When disabled,
                shows the normal screen.  Note that the normal screen may
                have saved lines; the alternate screen does not.

    VT Fonts
      The xterm fontMenu pops up when the ``control'' key and pointer button
      three are pressed in a window.  It sets the font used in the VTxxx
      window, or modifies the way the font is specified or displayed.  There
      are several sections.

      The first section allows you to select the font from a set of
      alternatives:

           Default (resource fontdefault)
                Set the font to the default, i.e., that given by the
                *VT100.font resource.

           Unreadable (resource font1)
                Set the font to that given by the *VT100.font1 resource.




                                   - 104 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



           Tiny (resource font2)
                Set the font to that given by the *VT100.font2 resource.

           Small (resource font3)
                Set the font to that given by the *VT100.font3 resource.

           Medium (resource font4)
                Set the font to that given by the *VT100.font4 resource.

           Large (resource font5)
                Set the font to that given by the *VT100.font5 resource.

           Huge (resource font6)
                Set the font to that given by the *VT100.font6 resource.

           Escape Sequence (resource fontescape)
                This allows you to set the font last specified by the Set
                Font escape sequence (see Xterm Control Sequences).

           Selection (resource fontsel)
                This allows you to set the font specified the current
                selection as a font name (if the PRIMARY selection is
                owned).

      The second section allows you to modify the way it is displayed:

           Bold Fonts (resource allow-bold-fonts)
                This is normally checked (enabled).  When unchecked, xterm
                will not use bold fonts.  The setting corresponds to the
                allowBoldFonts resource.

           Line-Drawing Characters (resource font-linedrawing)
                When set, tells xterm to draw its own line-drawing
                characters.  Otherwise it relies on the font containing
                these.  Compare to the forceBoxChars resource.

           Packed Font (resource font-packed)
                When set, tells xterm to use the minimum glyph-width from a
                font when displaying characters.  Use the maximum width
                (unchecked) to help display proportional fonts.  Compare to
                the forcePackedFont resource.

           Doublesized Characters (resource font-doublesize)
                When set, xterm may ask the font server to produce scaled
                versions of the normal font, for VT102 double-size
                characters.

      The third section allows you to modify the way it is specified:




                                   - 105 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



           TrueType Fonts (resource render-font)
                If the renderFont and corresponding resources were set, this
                is a further control whether xterm will actually use the Xft
                library calls to obtain a font.

           UTF-8 Encoding (resource utf8-mode)
                This controls whether xterm uses UTF-8 encoding of
                input/output.  It is useful for temporarily switching xterm
                to display text from an application which does not follow
                the locale settings.  It corresponds to the utf8 resource.

           UTF-8 Fonts (resource utf8-fonts)
                This controls whether xterm uses UTF-8 fonts for display.
                It is useful for temporarily switching xterm to display text
                from an application which does not follow the locale
                settings.  It combines the utf8 and utf8Fonts resources,
                subject to the locale resource.

           UTF-8 Titles (resource utf8-title)
                This controls whether xterm accepts UTF-8 encoding for title
                control sequences.  It corresponds to the utf8Fonts
                resource.

                Initially the checkmark is set according to both the utf8
                and utf8Fonts resource values.  If the latter is set to
                ``always'', the checkmark is disabled.  Likewise, if there
                are no fonts given in the utf8Fonts subresources, then the
                checkmark also is disabled.

                The standard __default_class__ app-defaults file defines
                both sets of fonts, while the U__default_class__ app-
                defaults file defines only one set.  Assuming the standard
                app-defaults files, this command will launch xterm able to
                switch between UTF-8 and ISO-8859-1 encoded fonts:

                    uxterm -class __default_class__

      The fourth section allows you to enable or disable special operations
      which can be controlled by writing escape sequences to the terminal.
      These are disabled if the SendEvents feature is enabled:

           Allow Color Ops (resource allow-font-ops)
                This corresponds to the allowColorOps resource.  Enable or
                disable control sequences that set/query the colors.

           Allow Font Ops (resource allow-font-ops)
                This corresponds to the allowFontOps resource.  Enable or
                disable control sequences that set/query the font.




                                   - 106 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



           Allow Mouse Ops (resource allow-mouse-ops)
                Enable or disable control sequences that cause the terminal
                to send escape sequences on pointer-clicks and movement.
                This corresponds to the allowMouseOps resource.

           Allow Tcap Ops (resource allow-tcap-ops)
                Enable or disable control sequences that query the
                terminal's notion of its function-key strings, as termcap or
                terminfo capabilities.  This corresponds to the allowTcapOps
                resource.

           Allow Title Ops (resource allow-title-ops)
                Enable or disable control sequences that modify the window
                title or icon name.  This corresponds to the allowTitleOps
                resource.

           Allow Window Ops (resource allow-window-ops)
                Enable or disable extended window control sequences (as used
                in dtterm).  This corresponds to the allowWindowOps
                resource.

    Tek Options
      The xterm tekMenu sets various modes in the Tektronix emulation, and
      is popped up when the ``control'' key and pointer button two are
      pressed in the Tektronix window.  The current font size is checked in
      the modes section of the menu.

           Large Characters (resource tektextlarge)

           #2 Size Characters (resource tektext2)

           #3 Size Characters (resource tektext3)

           Small Characters (resource tektextsmall)

      Commands:

           PAGE (resource tekpage)
                Simulates the Tektronix ``PAGE'' button by

                +   clearing the window,

                +   cancelling the graphics input-mode, and

                +   moving the cursor to the home position.

           RESET (resource tekreset)
                Unlike the similarly-named Tektronix ``RESET'' button, this
                does everything that PAGE does as well as resetting the



                                   - 107 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



                line-type and font-size to their default values.

           COPY (resource tekcopy)
                Simulates the Tektronix ``COPY'' button (which makes a
                hard-copy of the screen) by writing the information to a
                text file.

      Windows:

           Show VT Window (resource vtshow)

           Switch to VT Mode (resource vtmode)

           Hide Tek Window (resource tekhide)

 SECURITY
      X environments differ in their security consciousness.

      +   Most servers, run under xdm, are capable of using a ``magic
          cookie'' authorization scheme that can provide a reasonable level
          of security for many people.  If your server is only using a
          host-based mechanism to control access to the server (see
          xhost(__mansuffix__)), then if you enable access for a host and
          other users are also permitted to run clients on that same host,
          it is possible that someone can run an application which uses the
          basic services of the X protocol to snoop on your activities,
          potentially capturing a transcript of everything you type at the
          keyboard.

      +   Any process which has access to your X display can manipulate it
          in ways that you might not anticipate, even redirecting your
          keyboard to itself and sending events to your application's
          windows.  This is true even with the ``magic cookie''
          authorization scheme.  While the allowSendEvents provides some
          protection against rogue applications tampering with your
          programs, guarding against a snooper is harder.

      +   The X input extension for instance allows an application to bypass
          all of the other (limited) authorization and security features,
          including the GrabKeyboard protocol.

      +   The possibility of an application spying on your keystrokes is of
          particular concern when you want to type in a password or other
          sensitive data.  The best solution to this problem is to use a
          better authorization mechanism than is provided by X.

      Subject to all of these caveats, a simple mechanism exists for
      protecting keyboard input in xterm.




                                   - 108 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



      The xterm menu (see MENUS above) contains a Secure Keyboard entry
      which, when enabled, attempts to ensure that all keyboard input is
      directed only to xterm (using the GrabKeyboard protocol request).
      When an application prompts you for a password (or other sensitive
      data), you can enable Secure Keyboard using the menu, type in the
      data, and then disable Secure Keyboard using the menu again.

      +   This ensures that you know which window is accepting your
          keystrokes.

      +   It cannot ensure that there are no processes which have access to
          your X display that might be observing the keystrokes as well.

      Only one X client at a time can grab the keyboard, so when you attempt
      to enable Secure Keyboard it may fail.  In this case, the bell will
      sound.  If the Secure Keyboard succeeds, the foreground and background
      colors will be exchanged (as if you selected the Enable Reverse Video
      entry in the Modes menu); they will be exchanged again when you exit
      secure mode.  If the colors do not switch, then you should be very
      suspicious that you are being spoofed.  If the application you are
      running displays a prompt before asking for the password, it is safest
      to enter secure mode before the prompt gets displayed, and to make
      sure that the prompt gets displayed correctly (in the new colors), to
      minimize the probability of spoofing.  You can also bring up the menu
      again and make sure that a check mark appears next to the entry.

      Secure Keyboard mode will be disabled automatically if your xterm
      window becomes iconified (or otherwise unmapped), or if you start up a
      reparenting window manager (that places a title bar or other
      decoration around the window) while in Secure Keyboard mode.  (This is
      a feature of the X protocol not easily overcome.)  When this happens,
      the foreground and background colors will be switched back and the
      bell will sound in warning.

 CHARACTER CLASSES
      Clicking the left pointer button twice in rapid succession (double-
      clicking) causes all characters of the same class (e.g., letters,
      white space, punctuation) to be selected as a ``word''.  Since
      different people have different preferences for what should be
      selected (for example, should filenames be selected as a whole or only
      the separate subnames), the default mapping can be overridden through
      the use of the charClass (class CharClass) resource.

      This resource is a series of comma-separated range:value pairs.

      +   The range is either a single number or low-high in the range of 0
          to 65535, corresponding to the code for the character or
          characters to be set.




                                   - 109 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



      +   The value is arbitrary.  For example, the default table uses the
          character number of the first character occurring in the set.
          When not in UTF-8 mode, only the first 256 entries of this table
          will be used.

      The default table starts as follows -

          static int charClass[256] = {
          /* NUL  SOH  STX  ETX  EOT  ENQ  ACK  BEL */
              32,   1,   1,   1,   1,   1,   1,   1,
          /*  BS   HT   NL   VT   NP   CR   SO   SI */
               1,  32,   1,   1,   1,   1,   1,   1,
          /* DLE  DC1  DC2  DC3  DC4  NAK  SYN  ETB */
               1,   1,   1,   1,   1,   1,   1,   1,
          /* CAN   EM  SUB  ESC   FS   GS   RS   US */
               1,   1,   1,   1,   1,   1,   1,   1,
          /*  SP    !    "    #    $    %    &    ' */
              32,  33,  34,  35,  36,  37,  38,  39,
          /*   (    )    *    +    ,    -    .    / */
              40,  41,  42,  43,  44,  45,  46,  47,
          /*   0    1    2    3    4    5    6    7 */
              48,  48,  48,  48,  48,  48,  48,  48,
          /*   8    9    :    ;    <    =    >    ? */
              48,  48,  58,  59,  60,  61,  62,  63,
          /*   @    A    B    C    D    E    F    G */
              64,  48,  48,  48,  48,  48,  48,  48,
          /*   H    I    J    K    L    M    N    O */
              48,  48,  48,  48,  48,  48,  48,  48,
          /*   P    Q    R    S    T    U    V    W */
              48,  48,  48,  48,  48,  48,  48,  48,
          /*   X    Y    Z    [    \    ]    ^    _ */
              48,  48,  48,  91,  92,  93,  94,  48,
          /*   `    a    b    c    d    e    f    g */
              96,  48,  48,  48,  48,  48,  48,  48,
          /*   h    i    j    k    l    m    n    o */
              48,  48,  48,  48,  48,  48,  48,  48,
          /*   p    q    r    s    t    u    v    w */
              48,  48,  48,  48,  48,  48,  48,  48,
          /*   x    y    z    {    |    }    ~  DEL */
              48,  48,  48, 123, 124, 125, 126,   1,
          /* x80  x81  x82  x83  IND  NEL  SSA  ESA */
               1,   1,   1,   1,   1,   1,   1,   1,
          /* HTS  HTJ  VTS  PLD  PLU   RI  SS2  SS3 */
               1,   1,   1,   1,   1,   1,   1,   1,
          /* DCS  PU1  PU2  STS  CCH   MW  SPA  EPA */
               1,   1,   1,   1,   1,   1,   1,   1,
          /* x98  x99  x9A  CSI   ST  OSC   PM  APC */
               1,   1,   1,   1,   1,   1,   1,   1,
          /*   -    i   c/    L   ox   Y-    |   So */



                                   - 110 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



             160, 161, 162, 163, 164, 165, 166, 167,
          /*  ..   c0   ip   <<    _        R0    - */
             168, 169, 170, 171, 172, 173, 174, 175,
          /*   o   +-    2    3    '    u   q|    . */
             176, 177, 178, 179, 180, 181, 182, 183,
          /*   ,    1    2   >>  1/4  1/2  3/4    ? */
             184, 185, 186, 187, 188, 189, 190, 191,
          /*  A`   A'   A^   A~   A:   Ao   AE   C, */
              48,  48,  48,  48,  48,  48,  48,  48,
          /*  E`   E'   E^   E:   I`   I'   I^   I: */
              48,  48,  48,  48,  48,  48,  48,  48,
          /*  D-   N~   O`   O'   O^   O~   O:    X */
              48,  48,  48,  48,  48,  48,  48, 215,
          /*  O/   U`   U'   U^   U:   Y'    P    B */
              48,  48,  48,  48,  48,  48,  48,  48,
          /*  a`   a'   a^   a~   a:   ao   ae   c, */
              48,  48,  48,  48,  48,  48,  48,  48,
          /*  e`   e'   e^   e:   i`   i'   i^   i: */
              48,  48,  48,  48,  48,  48,  48,  48,
          /*   d   n~   o`   o'   o^   o~   o:   -: */
              48,  48,  48,  48,  48,  48,  48, 247,
          /*  o/   u`   u'   u^   u:   y'    P   y: */
              48,  48,  48,  48,  48,  48,  48,  48};

           For example, the string ``33:48,37:48,45-47:48,38:48'' indicates
           that the exclamation mark, percent sign, dash, period, slash, and
           ampersand characters should be treated the same way as characters
           and numbers.  This is useful for cutting and pasting electronic
           mailing addresses and filenames.

 KEY BINDINGS
      It is possible to rebind keys (or sequences of keys) to arbitrary
      strings for input, by changing the translations resources for the
      vt100 or tek4014 widgets.  Changing the translations resource for
      events other than key and button events is not expected, and will
      cause unpredictable behavior.

    Actions
      The following actions are provided for use within the vt100 or tek4014
      translations resources:

      allow-bold-fonts(on/off/toggle)
              This action sets, unsets or toggles the allowBoldFonts
              resource and is also invoked by the allow-bold-fonts entry in
              fontMenu.

      allow-color-ops(on/off/toggle)
              This action sets, unsets or toggles the allowColorOps resource
              and is also invoked by the allow-color-ops entry in fontMenu.



                                   - 111 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



      allow-font-ops(on/off/toggle)
              This action sets, unsets or toggles the allowFontOps resource
              and is also invoked by the allow-font-ops entry in fontMenu.

      allow-mouse-ops(on/off/toggle)
              This action sets, unsets or toggles the allowMousepOps
              resource and is also invoked by the allow-mouse-ops entry in
              fontMenu.

      allow-send-events(on/off/toggle)
              This action sets, unsets or toggles the allowSendEvents
              resource and is also invoked by the allowsends entry in
              mainMenu.

      allow-tcap-ops(on/off/toggle)
              This action sets, unsets or toggles the allowTcapOps resource
              and is also invoked by the allow-tcap-ops entry in fontMenu.

      allow-title-ops(on/off/toggle)
              This action sets, unsets or toggles the allowTitleOps resource
              and is also invoked by the allow-title-ops entry in fontMenu.

      allow-window-ops(on/off/toggle)
              This action sets, unsets or toggles the allowWindowOps
              resource and is also invoked by the allow-window-ops entry in
              fontMenu.

      alt-sends-escape()
              This action toggles the state of the altSendsEscape resource.

      bell([percent])
              This action rings the keyboard bell at the specified
              percentage above or below the base volume.

      clear-saved-lines()
              This action does hard-reset() and also clears the history of
              lines saved off the top of the screen.  It is also invoked
              from the clearsavedlines entry in vtMenu.  The effect is
              identical to a hardware reset (RIS) control sequence.

      copy-selection(destname [, ...])
              This action puts the currently selected text into all of the
              selections or cutbuffers specified by destname.  Unlike
              select-end, it does not send a mouse position or otherwise
              modify the internal selection state.

      create-menu(m/v/f/t)
              This action creates one of the menus used by xterm, if it has
              not been previously created.  The parameter values are the



                                   - 112 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



              menu names: mainMenu, vtMenu, fontMenu, tekMenu, respectively.

      dabbrev-expand()
              Expands the word before cursor by searching in the preceding
              text on the screen and in the scrollback buffer for words
              starting with that abbreviation.  Repeating dabbrev-expand()
              several times in sequence searches for an alternative
              expansion by looking farther back.  Lack of more matches is
              signaled by a bell.  Attempts to expand an empty word (i.e.,
              when cursor is preceded by a space) yield successively all
              previous words.  Consecutive identical expansions are ignored.
              The word here is defined as a sequence of non-whitespace
              characters.  This feature partially emulates the behavior of
              ``dynamic abbreviation'' expansion in Emacs (bound there to
              M-/).  Here is a resource setting for xterm which will do the
              same thing:

                  *VT100*translations:    #override \n\
                          Meta <KeyPress> /:dabbrev-expand()

      deiconify()
              Changes the window state back to normal, if it was iconified.

      delete-is-del()
              This action toggles the state of the deleteIsDEL resource.

      dired-button()
              Handles a button event (other than press and release) by
              echoing the event's position (i.e., character line and column)
              in the following format:

                  ^X ESC G <line+`` ''> <col+`` ''>

      dump-html()
              Invokes the XHTML Screen Dump feature.

      dump-svg()
              Invokes the SVG Screen Dump feature.

      exec-formatted(format, sourcename [, ...])
              Execute an external command, using the current selection for
              part of the command's parameters.  The first parameter, format
              gives the basic command.  Succeeding parameters specify the
              selection source as in insert-selection.

              The format parameter allows these substitutions:

              %%   inserts a "%".




                                   - 113 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



              %P   the screen-position at the beginning of the highlighted
                   region, as a semicolon-separated pair of integers using
                   the values that the CUP control sequence would use.

              %p   the screen-position after the beginning of the
                   highlighted region, using the same convention as ``%P''.

              %S   the length of the string that ``%s'' would insert.

              %s   the content of the selection, unmodified.

              %T   the length of the string that ``%t'' would insert.

              %t   the selection, trimmed of leading/trailing whitespace.
                   Embedded spaces (and newlines) are copied as is.

              %R   the length of the string that ``%r'' would insert.

              %r   the selection, trimmed of trailing whitespace.

              %V   the video attributes at the beginning of the highlighted
                   region, as a semicolon-separated list of integers using
                   the values that the SGR control sequence would use.

              %v   the video attributes after the end of the highlighted
                   region, using the same convention as ``%V''.

              After constructing the command-string, xterm forks a
              subprocess and executes the command, which completes
              independently of xterm.

              For example, this translation would invoke a new xterm process
              to view a file whose name is selected while holding the shift
              key down.  The new process is started when the mouse button is
              released:

                  *VT100*translations: #override Shift \
                      <Btn1Up>:exec-formatted("xterm -e view '%t'", SELECT)

      exec-selectable(format, onClicks)
              Execute an external command, using data copied from the screen
              for part of the command's parameters.  The first parameter,
              format gives the basic command as in exec-formatted.  The
              second parameter specifies the method for copying the data as
              in the on2Clicks resource.

      fullscreen(on/off/toggle)
              This action sets, unsets or toggles the fullscreen resource.




                                   - 114 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



      iconify()
              Iconifies the window.

      hard-reset()
              This action resets the scrolling region, tabs, window size,
              and cursor keys and clears the screen.  It is also invoked
              from the hardreset entry in vtMenu.

      ignore()
              This action ignores the event but checks for special pointer
              position escape sequences.

      insert()
              This action inserts the character or string associated with
              the key that was pressed.

      insert-eight-bit()
              This action inserts an eight-bit (Meta) version of the
              character or string associated with the key that was pressed.
              Only single-byte values are treated specially.  The exact
              action depends on the value of the altSendsEscape and the
              metaSendsEscape and the eightBitInput resources.  The
              metaSendsEscape resource is tested first.  See the
              eightBitInput resource for a full discussion.

              The term ``eight-bit'' is misleading: xterm checks if the key
              is in the range 128 to 255 (the eighth bit is set).  If the
              value is in that range, depending on the resource values,
              xterm may then do one of the following:

              +   add 128 to the value, setting its eighth bit,

              +   send an ESC byte before the key, or

              +   send the key unaltered.

      insert-formatted(format, sourcename [, ...])
              Insert the current selection or data related to it, formatted.
              The first parameter, format gives the template for the data as
              in exec-formatted.  Succeeding parameters specify the
              selection source as in insert-selection.

      insert-selectable(format, onClicks)
              Insert data copied from the screen, formatted.  The first
              parameter, format gives the template for the data as in exec-
              formatted.  The second parameter specifies the method for
              copying the data as in the on2Clicks resource.

      insert-selection(sourcename [, ...])



                                   - 115 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



              This action inserts the string found in the selection or
              cutbuffer indicated by sourcename.  Sources are checked in the
              order given (case is significant) until one is found.
              Commonly-used selections include: PRIMARY, SECONDARY, and
              CLIPBOARD.  Cut buffers are typically named CUT_BUFFER0
              through CUT_BUFFER7.

      insert-seven-bit()
              This action is a synonym for insert().  The term ``seven-bit''
              is misleading: it only implies that xterm does not try to add
              128 to the key's value as in insert-eight-bit().

      interpret(control-sequence)
              Interpret the given control sequence locally, i.e., without
              passing it to the host.  This works by inserting the control
              sequence at the front of the input buffer.  Use ``\'' to
              escape octal digits in the string.  Xt does not allow you to
              put a null character (i.e., ``\000'') in the string.

      keymap(name)
              This action dynamically defines a new translation table whose
              resource name is name with the suffix ``Keymap'' (i.e.,
              nameKeymap, where case is significant).  The name None
              restores the original translation table.

      larger-vt-font()
              Set the font to the next larger one, based on the font
              dimensions.  See also set-vt-font().

      load-vt-fonts(name[,class])
              Load fontnames from the given subresource name and class.
              That is, load the ``*VT100.name.font'', resource as
              ``*VT100.font'' etc.  If no name is given, the original set of
              fontnames is restored.

              Unlike set-vt-font(), this does not affect the escape- and
              select-fonts, since those are not based on resource values.
              It does affect the fonts loosely organized under the
              ``Default'' menu entry, including font, boldFont, wideFont and
              wideBoldFont.

      maximize()
              Resizes the window to fill the screen.

      meta-sends-escape()
              This action toggles the state of the metaSendsEscape resource.

      popup-menu(menuname)
              This action displays the specified popup menu.  Valid names



                                   - 116 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



              (case is significant) include:  mainMenu, vtMenu, fontMenu,
              and tekMenu.

      print(printer-flags)
              This action prints the window.  It is also invoked by the
              print entry in mainMenu.

              The action accepts optional parameters, which temporarily
              override resource settings.  The parameter values are matched
              ignoring case:

              noFormFeed
                   no form feed will be sent at the end of the last line
                   printed (i.e., printerFormFeed is ``false'').

              FormFeed
                   a form feed will be sent at the end of the last line
                   printed (i.e., printerFormFeed is ``true'').

              noNewLine
                   no newline will be sent at the end of the last line
                   printed, and wrapped lines will be combined into long
                   lines (i.e., printerNewLine is ``false'').

              NewLine
                   a newline will be sent at the end of the last line
                   printed, and each line will be limited (by adding a
                   newline) to the screen width (i.e., printerNewLine is
                   ``true'').

              noAttrs
                   the page is printed without attributes (i.e.,
                   printAttributes is ``0'').

              monoAttrs
                   the page is printed with monochrome (vt220) attributes
                   (i.e., printAttributes is ``1'').

              colorAttrs
                   the page is printed with ANSI color attributes (i.e.,
                   printAttributes is ``2'').

      print-everything(printer-flags)
              This action sends the entire text history, in addition to the
              text currently visible, to the program given in the
              printerCommand resource.  It allows the same optional
              parameters as the print action.  With a suitable printer
              command, the action can be used to load the text history in an
              editor.



                                   - 117 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



      print-immediate()
              Sends the text of the current window directly to a file, as
              specified by the printFileImmediate, printModeImmediate and
              printOptsImmediate resources.

      print-on-error()
              Toggles a flag telling xterm that if it exits with an X error,
              to send the text of the current window directly to a file, as
              specified by the printFileOnXError, printModeOnXError and
              printOptsOnXError resources.

      print-redir()
              This action toggles the printerControlMode between 0 and 2.
              The corresponding popup menu entry is useful for switching the
              printer off if you happen to change your mind after deciding
              to print random binary files on the terminal.

      quit()
              This action sends a SIGHUP to the subprogram and exits.  It is
              also invoked by the quit entry in mainMenu.

      readline-button()
              Supports the optional readline feature by echoing repeated
              cursor forward or backward control sequences on button release
              event, to request that the host application update its notion
              of the cursor's position to match the button event.

      redraw()
              This action redraws the window.  It is also invoked by the
              redraw entry in mainMenu.

      restore()
              Restores the window to the size before it was last maximized.

      scroll-back(count [,units [,mouse] ])
              This action scrolls the text window backward so that text that
              had previously scrolled off the top of the screen is now
              visible.

              The count argument indicates the number of units (which may be
              page, halfpage, pixel, or line) by which to scroll.

              An adjustment can be specified for the page or halfpage units
              by appending a ``+'' or ``-'' sign followed by a number, e.g.,
              page-2 to specify 2 lines less than a page.

              If the third parameter mouse is given, the action is ignored
              when mouse reporting is enabled.




                                   - 118 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



      scroll-forw(count [,units [,mouse] ])
              This action is similar to scroll-back except that it scrolls
              in the other direction.

      secure()
              This action toggles the Secure Keyboard mode (see SECURITY),
              and is invoked from the securekbd entry in mainMenu.

      scroll-lock(on/off/toggle)
              This action sets, unsets or toggles internal state which tells
              xterm whether Scroll Lock is active, subject to the
              allowScrollLock resource.

      scroll-to(count)
              Scroll to the given line relative to the beginning of the
              saved-lines.  For instance, ``scroll-to(0)'' would scroll to
              the beginning.  Two special nonnumeric parameters are
              recognized:

              scroll-to(begin)
                      Scroll to the beginning of the saved lines.

              scroll-to(end)
                      Scroll to the end of the saved lines, i.e., to the
                      currently active page.

      select-cursor-end(destname [, ...])
              This action is similar to select-end except that it should be
              used with select-cursor-start.

      select-cursor-extend()
              This action is similar to select-extend except that it should
              be used with select-cursor-start.

      select-cursor-start()
              This action is similar to select-start except that it begins
              the selection at the current text cursor position.

      select-end(destname [, ...])
              This action puts the currently selected text into all of the
              selections or cutbuffers specified by destname.  It also sends
              a mouse position and updates the internal selection state to
              reflect the end of the selection process.

      select-extend()
              This action tracks the pointer and extends the selection.  It
              should only be bound to Motion events.

      select-set()



                                   - 119 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



              This action stores text that corresponds to the current
              selection, without affecting the selection mode.

      select-start()
              This action begins text selection at the current pointer
              location.  See the section on POINTER USAGE for information on
              making selections.

      send-signal(signame)
              This action sends the signal named by signame to the xterm
              subprocess (the shell or program specified with the -e command
              line option).  It is also invoked by the suspend, continue,
              interrupt, hangup, terminate, and kill entries in mainMenu.
              Allowable signal names are (case is not significant): tstp (if
              supported by the operating system), suspend (same as tstp),
              cont (if supported by the operating system), int, hup, term,
              quit, alrm, alarm (same as alrm) and kill.

      set-8-bit-control(on/off/toggle)
              This action sets, unsets or toggles the eightBitControl
              resource.  It is also invoked from the 8-bit-control entry in
              vtMenu.

      set-allow132(on/off/toggle)
              This action sets, unsets or toggles the c132 resource.  It is
              also invoked from the allow132 entry in vtMenu.

      set-altscreen(on/off/toggle)
              This action sets, unsets or toggles between the alternate and
              current screens.

      set-appcursor(on/off/toggle)
              This action sets, unsets or toggles the handling Application
              Cursor Key mode and is also invoked by the appcursor entry in
              vtMenu.

      set-appkeypad(on/off/toggle)
              This action sets, unsets or toggles the handling of
              Application Keypad mode and is also invoked by the appkeypad
              entry in vtMenu.

      set-autolinefeed(on/off/toggle)
              This action sets, unsets or toggles automatic insertion of
              linefeeds.  It is also invoked by the autolinefeed entry in
              vtMenu.

      set-autowrap(on/off/toggle)
              This action sets, unsets or toggles automatic wrapping of long
              lines.  It is also invoked by the autowrap entry in vtMenu.



                                   - 120 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



      set-backarrow(on/off/toggle)
              This action sets, unsets or toggles the backarrowKey resource.
              It is also invoked from the backarrow key entry in vtMenu.

      set-bellIsUrgent(on/off/toggle)
              This action sets, unsets or toggles the bellIsUrgent resource.
              It is also invoked by the bellIsUrgent entry in vtMenu.

      set-cursorblink(on/off/toggle)
              This action sets, unsets or toggles the cursorBlink resource.
              It is also invoked from the cursorblink entry in vtMenu.

      set-cursesemul(on/off/toggle)
              This action sets, unsets or toggles the curses resource.  It
              is also invoked from the cursesemul entry in vtMenu.

      set-font-doublesize(on/off/toggle)
              This action sets, unsets or toggles the fontDoublesize
              resource.  It is also invoked by the font-doublesize entry in
              fontMenu.

      set-hp-function-keys(on/off/toggle)
              This action sets, unsets or toggles the hpFunctionKeys
              resource.  It is also invoked by the hpFunctionKeys entry in
              mainMenu.

      set-jumpscroll(on/off/toggle)
              This action sets, unsets or toggles the jumpscroll resource.
              It is also invoked by the jumpscroll entry in vtMenu.

      set-font-linedrawing(on/off/toggle)
              This action sets, unsets or toggles the xterm's state
              regarding whether the current font has line-drawing characters
              and whether it should draw them directly.  It is also invoked
              by the font-linedrawing entry in fontMenu.

      set-font-packed(on/off/toggle)
              This action sets, unsets or toggles the forcePackedFont
              resource which controls use of the font's minimum or maximum
              glyph width.  It is also invoked by the font-packed entry in
              fontMenu.

      set-keep-clipboard(on/off/toggle)
              This action sets, unsets or toggles the keepClipboard
              resource.

      set-keep-selection(on/off/toggle)
              This action sets, unsets or toggles the keepSelection
              resource.  It is also invoked by the keepSelection entry in



                                   - 121 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



              vtMenu.

      set-logging(on/off/toggle)
              This action sets, unsets or toggles the state of the logging
              option.

      set-old-function-keys(on/off/toggle)
              This action sets, unsets or toggles the state of legacy
              function keys.  It is also invoked by the oldFunctionKeys
              entry in mainMenu.

      set-marginbell(on/off/toggle)
              This action sets, unsets or toggles the marginBell resource.

      set-num-lock(on/off/toggle)
              This action toggles the state of the numLock resource.

      set-pop-on-bell(on/off/toggle)
              This action sets, unsets or toggles the popOnBell resource.
              It is also invoked by the poponbell entry in vtMenu.

      set-private-colors(on/off/toggle)
              This action sets, unsets or toggles the privateColorRegisters
              resource.

      set-render-font(on/off/toggle)
              This action sets, unsets or toggles the renderFont resource.
              It is also invoked by the render-font entry in fontMenu.

      set-reverse-video(on/off/toggle)
              This action sets, unsets or toggles the reverseVideo resource.
              It is also invoked by the reversevideo entry in vtMenu.

      set-reversewrap(on/off/toggle)
              This action sets, unsets or toggles the reverseWrap resource.
              It is also invoked by the reversewrap entry in vtMenu.

      set-scroll-on-key(on/off/toggle)
              This action sets, unsets or toggles the scrollKey resource.
              It is also invoked from the scrollkey entry in vtMenu.

      set-scroll-on-tty-output(on/off/toggle)
              This action sets, unsets or toggles the scrollTtyOutput
              resource.  It is also invoked from the scrollttyoutput entry
              in vtMenu.

      set-scrollbar(on/off/toggle)
              This action sets, unsets or toggles the scrollbar resource.
              It is also invoked by the scrollbar entry in vtMenu.



                                   - 122 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



      set-sco-function-keys(on/off/toggle)
              This action sets, unsets or toggles the scoFunctionKeys
              resource.  It is also invoked by the scoFunctionKeys entry in
              mainMenu.

      set-select(on/off/toggle)
              This action sets, unsets or toggles the selectToClipboard
              resource.  It is also invoked by the selectToClipboard entry
              in vtMenu.

      set-sixel-scrolling(on/off/toggle)
              This action toggles between inline (sixel scrolling) and
              absolute positioning.  It can also be controlled via DEC
              private mode 80 (DECSDM) or from the sixelScrolling entry in
              the btMenu.

      set-sun-function-keys(on/off/toggle)
              This action sets, unsets or toggles the sunFunctionKeys
              resource.  It is also invoked by the sunFunctionKeys entry in
              mainMenu.

      set-sun-keyboard(on/off/toggle)
              This action sets, unsets or toggles the sunKeyboard resource.
              It is also invoked by the sunKeyboard entry in mainMenu.

      set-tek-text(large/2/3/small)
              This action sets the font used in the Tektronix window to the
              value of the selected resource according to the argument.  The
              argument can be either a keyword or single-letter alias, as
              shown in parentheses:

              large (l)
                   Use resource fontLarge, same as menu entry tektextlarge.

              two (2)
                   Use resource font2, same as menu entry tektext2.

              three (3)
                   Use resource font3, same as menu entry tektext3.

              small (s)
                   Use resource fontSmall, same as menu entry tektextsmall.

      set-terminal-type(type)
              This action directs output to either the vt or tek windows,
              according to the type string.  It is also invoked by the
              tekmode entry in vtMenu and the vtmode entry in tekMenu.

      set-titeInhibit(on/off/toggle)



                                   - 123 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



              This action sets, unsets or toggles the titeInhibit resource,
              which controls switching between the alternate and current
              screens.

      set-toolbar(on/off/toggle)
              This action sets, unsets or toggles the toolbar feature.  It
              is also invoked by the toolbar entry in mainMenu.

      set-utf8-fonts(on/off/toggle)
              This action sets, unsets or toggles the utf8Fonts resource.
              It is also invoked by the utf8-fonts entry in fontMenu.

      set-utf8-mode(on/off/toggle)
              This action sets, unsets or toggles the utf8 resource.  It is
              also invoked by the utf8-mode entry in fontMenu.

      set-utf8-title(on/off/toggle)
              This action sets, unsets or toggles the utf8Title resource.
              It is also invoked by the utf8-title entry in fontMenu.

      set-visibility(vt/tek,on/off/toggle)
              This action sets, unsets or toggles whether or not the vt or
              tek windows are visible.  It is also invoked from the tekshow
              and vthide entries in vtMenu and the vtshow and tekhide
              entries in tekMenu.

      set-visual-bell(on/off/toggle)
              This action sets, unsets or toggles the visualBell resource.
              It is also invoked by the visualbell entry in vtMenu.

      set-vt-font(d/1/2/3/4/5/6/e/s [,normalfont [, boldfont]])
              This action sets the font or fonts currently being used in the
              VTxxx window.  The first argument is a single character that
              specifies the font to be used:

              d or D indicate the default font (the font initially used when
                   xterm was started),

              1 through 6 indicate the fonts specified by the font1 through
                   font6 resources,

              e or E indicate the normal and bold fonts that have been set
                   through escape codes (or specified as the second and
                   third action arguments, respectively), and

              s or S indicate the font selection (as made by programs such
                   as xfontsel(__mansuffix__)) indicated by the second
                   action argument.




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 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



              If xterm is configured to support wide characters, an
              additional two optional parameters are recognized for the e
              argument: wide font and wide bold font.

      smaller-vt-font()
              Set the font to the next smaller one, based on the font
              dimensions.  See also set-vt-font().

      soft-reset()
              This action resets the scrolling region.  It is also invoked
              from the softreset entry in vtMenu.  The effect is identical
              to a soft reset (DECSTR) control sequence.

      spawn-new-terminal(params)
              Spawn a new xterm process.  This is available on systems which
              have a modern version of the process filesystem, e.g.,
              ``/proc'', which xterm can read.

              Use the ``cwd'' process entry, e.g., /proc/12345/cwd to obtain
              the working directory of the process which is running in the
              current xterm.

              On systems which have the ``exe'' process entry, e.g.,
              /proc/12345/exe, use this to obtain the actual executable.
              Otherwise, use the $PATH variable to find xterm.

              If parameters are given in the action, pass them to the new
              xterm process.

      start-extend()
              This action is similar to select-start except that the
              selection is extended to the current pointer location.

      start-cursor-extend()
              This action is similar to select-extend except that the
              selection is extended to the current text cursor position.

      string(string)
              This action inserts the specified text string as if it had
              been typed.  Quotation is necessary if the string contains
              whitespace or non-alphanumeric characters.  If the string
              argument begins with the characters ``0x'', it is interpreted
              as a hex character constant.

      tek-copy()
              This action copies the escape codes used to generate the
              current window contents to a file in the current directory
              beginning with the name COPY.  It is also invoked from the
              tekcopy entry in tekMenu.



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                                __app_date__



      tek-page()
              This action clears the Tektronix window.  It is also invoked
              by the tekpage entry in tekMenu.

      tek-reset()
              This action resets the Tektronix window.  It is also invoked
              by the tekreset entry in tekMenu.

      vi-button()
              Handles a button event (other than press and release) by
              echoing a control sequence computed from the event's line
              number in the screen relative to the current line:

                  ESC ^P

              or

                  ESC ^N

              according to whether the event is before, or after the current
              line, respectively.  The ^N (or ^P) is repeated once for each
              line that the event differs from the current line.  The
              control sequence is omitted altogether if the button event is
              on the current line.

      visual-bell()
              This action flashes the window quickly.

      The Tektronix window also has the following action:

      gin-press(l/L/m/M/r/R)
              This action sends the indicated graphics input code.

    Default Key Bindings
      The default bindings in the VTxxx window use the SELECT token, which
      is set by the selectToClipboard resource.  These are for the vt100
      widget:

                    Shift <KeyPress> Prior:scroll-back(1,halfpage) \n\
                     Shift <KeyPress> Next:scroll-forw(1,halfpage) \n\
                   Shift <KeyPress> Select:select-cursor-start() \
                                           select-cursor-end(SELECT, CUT_BUFFER0) \n\
                   Shift <KeyPress> Insert:insert-selection(SELECT, CUT_BUFFER0) \n\
                           Alt <Key>Return:fullscreen() \n\
                  <KeyRelease> Scroll_Lock:scroll-lock() \n\
              Shift~Ctrl <KeyPress> KP_Add:larger-vt-font() \n\
              Shift Ctrl <KeyPress> KP_Add:smaller-vt-font() \n\
              Shift <KeyPress> KP_Subtract:smaller-vt-font() \n\
                          ~Meta <KeyPress>:insert-seven-bit() \n\



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 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



                           Meta <KeyPress>:insert-eight-bit() \n\
                          !Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
                     !Lock Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
           !Lock Ctrl @Num_Lock <Btn1Down>:popup-menu(mainMenu) \n\
               ! @Num_Lock Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
                          ~Meta <Btn1Down>:select-start() \n\
                        ~Meta <Btn1Motion>:select-extend() \n\
                          !Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
                     !Lock Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
           !Lock Ctrl @Num_Lock <Btn2Down>:popup-menu(vtMenu) \n\
               ! @Num_Lock Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
                    ~Ctrl ~Meta <Btn2Down>:ignore() \n\
                           Meta <Btn2Down>:clear-saved-lines() \n\
                      ~Ctrl ~Meta <Btn2Up>:insert-selection(SELECT, CUT_BUFFER0) \n\
                          !Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
                     !Lock Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
           !Lock Ctrl @Num_Lock <Btn3Down>:popup-menu(fontMenu) \n\
               ! @Num_Lock Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
                    ~Ctrl ~Meta <Btn3Down>:start-extend() \n\
                        ~Meta <Btn3Motion>:select-extend() \n\
                           Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
                      Lock Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
            Lock @Num_Lock Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
                 @Num_Lock Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
                                <Btn4Down>:scroll-back(5,line,m)     \n\
                           Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
                      Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
            Lock @Num_Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
                 @Num_Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
                                <Btn5Down>:scroll-forw(5,line,m)     \n\
                                   <BtnUp>:select-end(SELECT, CUT_BUFFER0) \n\
                                 <BtnDown>:ignore()

      The default bindings in the Tektronix window are analogous but less
      extensive.  These are for the tek4014 widget:

                           ~Meta<KeyPress>: insert-seven-bit() \n\
                            Meta<KeyPress>: insert-eight-bit() \n\
                          !Ctrl <Btn1Down>: popup-menu(mainMenu) \n\
                     !Lock Ctrl <Btn1Down>: popup-menu(mainMenu) \n\
           !Lock Ctrl @Num_Lock <Btn1Down>: popup-menu(mainMenu) \n\
                !Ctrl @Num_Lock <Btn1Down>: popup-menu(mainMenu) \n\
                          !Ctrl <Btn2Down>: popup-menu(tekMenu) \n\
                     !Lock Ctrl <Btn2Down>: popup-menu(tekMenu) \n\
           !Lock Ctrl @Num_Lock <Btn2Down>: popup-menu(tekMenu) \n\
                !Ctrl @Num_Lock <Btn2Down>: popup-menu(tekMenu) \n\
                     Shift ~Meta<Btn1Down>: gin-press(L) \n\
                           ~Meta<Btn1Down>: gin-press(l) \n\
                     Shift ~Meta<Btn2Down>: gin-press(M) \n\



                                   - 127 -      Formatted:  October 24, 2018






 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



                           ~Meta<Btn2Down>: gin-press(m) \n\
                     Shift ~Meta<Btn3Down>: gin-press(R) \n\
                           ~Meta<Btn3Down>: gin-press(r)

    Custom Key Bindings
      You can modify the translations resource by overriding parts of it, or
      merging your resources with it.

      Here is an example which uses shifted select/paste to copy to the
      clipboard, and unshifted select/paste for the primary selection.  In
      each case, a (different) cut buffer is also a target or source of the
      select/paste operation.  It is important to remember however, that cut
      buffers store data in ISO-8859-1 encoding, while selections can store
      data in a variety of formats and encodings.  While xterm owns the
      selection, it highlights it.  When it loses the selection, it removes
      the corresponding highlight.  But you can still paste from the
      corresponding cut buffer.

          *VT100*translations:    #override \n\
             ~Shift~Ctrl<Btn2Up>: insert-selection(PRIMARY, CUT_BUFFER0) \n\
              Shift~Ctrl<Btn2Up>: insert-selection(CLIPBOARD, CUT_BUFFER1) \n\
             ~Shift     <BtnUp> : select-end(PRIMARY, CUT_BUFFER0) \n\
              Shift     <BtnUp> : select-end(CLIPBOARD, CUT_BUFFER1)

      In the example, the class name VT100 is used rather than the widget
      name.  These are different; a class name could apply to more than one
      widget.  A leading ``*'' is used because the widget hierarchy above
      the vt100 widget depends on whether the toolbar support is compiled
      into xterm.

      Most of the predefined translations are related to the mouse, with a
      few that use some of the special keys on the keyboard.  Applications
      use special keys (function-keys, cursor-keys, keypad-keys) with
      modifiers (shift, control, alt).  If xterm defines a translation for a
      given combination of special key and modifier, that makes it
      unavailable for use by applications within the terminal.  For
      instance, one might extend the use of Page Up and Page Down keys seen
      here:

              Shift <KeyPress> Prior : scroll-back(1,halfpage) \n\
              Shift <KeyPress> Next  : scroll-forw(1,halfpage) \n\

      to the Home and End keys:

              Shift <KeyPress> Home : scroll-to(begin) \n\
              Shift <KeyPress> End  : scroll-to(end)

      but then shift-Home and shift-End would then be unavailable to
      applications.



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 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



      Not everyone finds the three-button mouse bindings easy to use.  In a
      wheel mouse, the middle button might be the wheel.  As an alternative,
      you could add a binding using shifted keys:

          *VT100*translations:      #override \n\
              Shift <Key>Home:    copy-selection(SELECT) \n\
              Shift <Key>Insert:  copy-selection(SELECT) \n\
              Ctrl Shift <Key>C:  copy-selection(SELECT) \n\
              Ctrl Shift <Key>V:  insert-selection(SELECT)

      You would still use the left- and right-mouse buttons (typically 1 and
      3) for beginning and extending selections.

      Besides mouse problems, there are also keyboards with inconvenient
      layouts.  Some lack a numeric keypad, making it hard to use the
      shifted keypad plus and minus bindings for switching between font
      sizes.  You can work around that by assigning the actions to more
      readily accessed keys:

          *VT100*translations:      #override \n\
              Ctrl <Key> +:       larger-vt-font() \n\
              Ctrl <Key> -:       smaller-vt-font()

      The keymap feature allows you to switch between sets of translations.
      The sample below shows how the keymap() action may be used to add
      special keys for entering commonly-typed words:

          *VT100.Translations: #override <Key>F13: keymap(dbx)
          *VT100.dbxKeymap.translations: \
                  <Key>F14:       keymap(None) \n\
                  <Key>F17:       string("next") \n\
                                  string(0x0d) \n\
                  <Key>F18:       string("step") \n\
                                  string(0x0d) \n\
                  <Key>F19:       string("continue") \n\
                                  string(0x0d) \n\
                  <Key>F20:       string("print ") \n\
                                  insert-selection(PRIMARY, CUT_BUFFER0)

    Default Scrollbar Bindings
      Key bindings are normally associated with the vt100 or tek4014 widgets
      which act as terminal emulators.  Xterm's scrollbar (and toolbar if it
      is configured) are separate widgets.  Because all of these use the X
      Toolkit, they have corresponding translations resources.  Those
      resources are distinct, and match different patterns, e.g., the
      differences in widget-name and number of levels of widgets which they
      may contain.

      The scrollbar widget is a child of the vt100 widget.  It is positioned



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                                __app_date__



      on top of the vt100 widget.  Toggling the scrollbar on and off causes
      the vt100 widget to resize.

      The default bindings for the scrollbar widget use only mouse-button
      events:

             <Btn5Down>: StartScroll(Forward) \n\
             <Btn1Down>: StartScroll(Forward) \n\
             <Btn2Down>: StartScroll(Continuous) MoveThumb() NotifyThumb() \n\
             <Btn3Down>: StartScroll(Backward) \n\
             <Btn4Down>: StartScroll(Backward) \n\
             <Btn2Motion>: MoveThumb() NotifyThumb() \n\
             <BtnUp>:    NotifyScroll(Proportional) EndScroll()

      Events which the scrollbar widget does not recognize at all are lost.

      However, at startup, xterm augments these translations with the
      default translations used for the vt100 widget, together with the
      resource ``actions'' which those translations use.  Because the
      scrollbar (or menubar) widgets do not recognize these actions (but
      because it has a corresponding translation), they are passed on to the
      vt100 widget.

      This augmenting of the scrollbar's translations has a few limitations:

      +   Xterm knows what the default translations are, but there is no
          suitable library interface for determining what customizations a
          user may have added to the vt100 widget.  All that xterm can do is
          augment the scrollbar widget to give it the same starting point
          for further customization by the user.

      +   Events in the gap between the widgets may be lost.

      +   Compose sequences begun in one widget cannot be completed in the
          other, because the input methods for each widget do not share
          context information.

      Most customizations of the scrollbar translations do not concern key
      bindings.  Rather, users are generally more interested in changing the
      bindings of the mouse buttons.  For example, some people prefer using
      the left pointer button for dragging the scrollbar thumb.  That can be
      set up by altering the translations resource, e.g.,

          *VT100.scrollbar.translations:  #override \n\
             <Btn5Down>:     StartScroll(Forward) \n\
             <Btn1Down>:     StartScroll(Continuous) MoveThumb() NotifyThumb() \n\
             <Btn4Down>:     StartScroll(Backward) \n\
             <Btn1Motion>:   MoveThumb() NotifyThumb() \n\
             <BtnUp>:        NotifyScroll(Proportional) EndScroll()



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 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



 CONTROL SEQUENCES AND KEYBOARD
      Applications can send sequences of characters to the terminal to
      change its behavior.  Often they are referred to as ``ANSI escape
      sequences'' or just plain ``escape sequences'' but both terms are
      misleading:

      +   ANSI x3.64 (obsolete) which was replaced by ISO 6429 (ECMA-48)
          gave rules for the format of these sequences of characters.

      +   While the original VT100 was claimed to be ANSI-compatible
          (against x3.64), there is no freely available version of the ANSI
          standard to show where the VT100 differs.  Most of the documents
          which mention the ANSI standard have additions not found in the
          original (such as those based on ansi.sys).  So this discussion
          focuses on the ISO standards.

      +   The standard describes only sequences sent from the host to the
          terminal.  There is no standard for sequences sent by special keys
          from the terminal to the host.  By convention (and referring to
          existing terminals), the format of those sequences usually
          conforms to the host-to-terminal standard.

      +   Some of xterm's sequences do not fit into the standard scheme.
          Technically those are ``unspecified''.  As an example, DEC Screen
          Alignment Test (DECALN) is this three-character sequence:

              ESC # 8

      +   Some sequences fit into the standard format, but are not listed in
          the standard.  These include the sequences used for setting up
          scrolling margins and doing forward/reverse scrolling.

      +   Some of the sequences (in particular, the single-character
          functions such as tab and backspace) do not include the escape
          character.

      With all of that in mind, the standard refers to these sequences of
      characters as ``control sequences''.

      Xterm Control Sequences lists the control sequences which an
      application can send xterm to make it perform various operations.
      Most of these operations are standardized, from either the DEC or
      Tektronix terminals, or from more widely used standards such as ISO-
      6429.

      A few examples of usage are given in this section.

    Window and Icon Titles
      Some scripts use echo with options -e and -n to tell the shell to



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                                __app_date__



      interpret the string ``\e'' as the escape character and to suppress a
      trailing newline on output.  Those are not portable, nor recommended.
      Instead, use printf (POSIX).

      For example, to set the window title to ``Hello world!'', you could
      use one of these commands in a script:

          printf '\033]2;Hello world!\033\'
          printf '\033]2;Hello world!\007'
          printf '\033]2;%s\033\' "Hello world!"
          printf '\033]2;%s\007' "Hello world!"

      The printf command interprets the octal value ``\033'' for escape, and
      (since it was not given in the format) omits a trailing newline from
      the output.

      Some programs (such as screen(1)) set both window- and icon-titles at
      the same time, using a slightly different control sequence:

          printf '\033]0;Hello world!\033\'
          printf '\033]0;Hello world!\007'
          printf '\033]0;%s\033\' "Hello world!"
          printf '\033]0;%s\007' "Hello world!"

      The difference is the parameter ``0'' in each command.  Most window
      managers will honor either window title or icon title.  Some will make
      a distinction and allow you to set just the icon title.  You can tell
      xterm to ask for this with a different parameter in the control
      sequence:

          printf '\033]1;Hello world!\033\'
          printf '\033]1;Hello world!\007'
          printf '\033]1;%s\033\' "Hello world!"
          printf '\033]1;%s\007' "Hello world!"

    Special Keys
      Xterm, like any VT100-compatible terminal emulator, has two modes for
      the special keys (cursor-keys, numeric keypad, and certain function-
      keys):

      +   normal mode, which makes the special keys transmit ``useful''
          sequences such as the control sequence for cursor-up when pressing
          the up-arrow, and

      +   application mode, which uses a different control sequence that
          cannot be mistaken for the ``useful'' sequences.

      The main difference between the two modes is that normal mode
      sequences start with CSI (escape [) and application mode sequences



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                                __app_date__



      start with SS3 (escape O).

      The terminal is initialized into one of these two modes (usually the
      normal mode), based on the terminal description (termcap or terminfo).
      The terminal description also has capabilities (strings) defined for
      the keypad mode used in curses applications.

      There is a problem in using the terminal description for applications
      that are not intended to be full-screen curses applications: the
      definitions of special keys are only correct for this keypad mode.
      For example, some shells (unlike ksh(1), which appears to be hard-
      coded, not even using termcap) allow their users to customize key-
      bindings, assigning shell actions to special keys.

      +   bash(1) allows constant strings to be assigned to functions.  This
          is only successful if the terminal is initialized to application
          mode by default, because bash lacks flexibility in this area.  It
          uses a (less expressive than bash's) readline scripting language
          for setting up key bindings, which relies upon the user to
          statically enumerate the possible bindings for given values of
          $TERM.

      +   zsh(1) provides an analogous feature, but it accepts runtime
          expressions, as well as providing a $terminfo array for scripts.
          In particular, one can use the terminal database, transforming
          when defining a key-binding.  By transforming the output so that
          CSI and SS3 are equated, zsh can use the terminal database to
          obtain useful definitions for its command-line use regardless of
          whether the terminal uses normal or application mode initially.
          Here is an example:

              [[ "$terminfo[kcuu1]" == "^[O"* ]] && \
              bindkey -M viins "${terminfo[kcuu1]/O/[}" \
              vi-up-line-or-history

    Changing Colors
      A few shell programs provide the ability for users to add color and
      other video attributes to the shell prompt strings.  Users can do this
      by setting $PS1 (the primary prompt string).  Again, bash and zsh have
      provided features not found in ksh.  There is a problem, however: the
      prompt's width on the screen will not necessarily be the same as the
      number of characters.  Because there is no guidance in the POSIX
      standard, each shell addresses the problem in a different way:

      +   bash treats characters within ``\['' and ``\]'' as nonprinting
          (using no width on the screen).

      +   zsh treats characters within ``%{'' and ``%}'' as nonprinting.




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 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



      In addition to the difference in syntax, the shells provide different
      methods for obtaining useful escape sequences:

      +   As noted in Special Keys, zsh initializes the $terminfo array with
          the terminal capabilities.

          It also provides a function echoti which works like tput(1) to
          convert a terminal capability with its parameters into a string
          that can be written to the terminal.

      +   Shells lacking a comparable feature (such as bash) can always use
          the program tput to do this transformation.

      Hard-coded escape sequences are supported by each shell, but are not
      recommended because those rely upon particular configurations and
      cannot be easily moved between different user environments.

 ENVIRONMENT
      Xterm sets several environment variables.

    System Independent
      Some variables are used on every system:

      DISPLAY
           is the display name, pointing to the X server (see DISPLAY NAMES
           in X(__miscmansuffix__)).

      TERM
           is set according to the terminfo (or termcap) entry which it is
           using as a reference.

           On some systems, you may encounter situations where the shell
           which you use and xterm are built using libraries with different
           terminal databases.  In that situation, xterm may choose a
           terminal description not known to the shell.

      WINDOWID
           is set to the X window id number of the xterm window.

      XTERM_FILTER
           is set if a locale-filter is used.  The value is the pathname of
           the filter.

      XTERM_LOCALE
           shows the locale which was used by xterm on startup.  Some shell
           initialization scripts may set a different locale.

      XTERM_SHELL
           is set to the pathname of the program which is invoked.  Usually



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                                __app_date__



           that is a shell program, e.g., /bin/sh.  Since it is not
           necessarily a shell program however, it is distinct from
           ``SHELL''.

      XTERM_VERSION
           is set to the string displayed by the -version option.  That is
           normally an identifier for the X Window libraries used to build
           xterm, followed by xterm's patch number in parenthesis.  The
           patch number is also part of the response to a Secondary Device
           Attributes (DA) control sequence (see Xterm Control Sequences).

    System Dependent
      Depending on your system configuration, xterm may also set the
      following:

      COLUMNS
           the width of the xterm in characters (cf: ``stty columns'').

           When this variable is set, curses applications (and most terminal
           programs) will assume that the terminal has this many columns.

           Xterm would do this for systems which have no ability to tell the
           size of the terminal.  Those are very rare, none newer than the
           mid 1990s when SVR4 became prevalent.

      HOME
           when xterm is configured (at build-time) to update utmp.

      LINES
           the height of the xterm in characters (cf: ``stty rows'').

           When this variable is set, curses applications (and most terminal
           programs) will assume that the terminal has this many lines
           (rows).

           Xterm would do this for systems which have no ability to tell the
           size of the terminal.  Those are very rare, none newer than the
           mid 1990s when SVR4 became prevalent.

      LOGNAME
           when xterm is configured (at build-time) to update utmp.

           Your configuration may have set LOGNAME; xterm does not modify
           that.  If it is unset, xterm will use USER if it is set.
           Finally, if neither is set, xterm will use the getlogin(2)
           function.

      SHELL
           when xterm is configured (at build-time) to update utmp.  It is



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 XTERM(1)                      __app_version__                      XTERM(1)
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                                __app_date__



           also set if you provide a valid shell name as the optional
           parameter.

           Xterm sets this to an absolute pathname.  If you have set the
           variable to a relative pathname, xterm may set it to a different
           shell pathname.

           If you have set this to an pathname which does not correspond to
           a valid shell, xterm may unset it, to avoid confusion.

      TERMCAP
           the contents of the termcap entry corresponding to $TERM, with
           lines and columns values substituted for the actual size window
           you have created.

           This feature is, like LINES and COLUMNS, used rarely.  It
           addresses the same limitation of a few older systems by providing
           a way for termcap-based applications to get the initial
           screensize.

      TERMINFO
           may be defined to a nonstandard location using the configure
           script.

 FILES
      The actual pathnames given may differ on your system.

      /etc/shells
           contains a list of valid shell programs, used by xterm to decide
           if the ``SHELL'' environment variable should be set for the
           process started by xterm.

           On systems which have the getusershell function, xterm will use
           that function rather than directly reading the file, since the
           file may not be present if the system uses default settings.

      /etc/utmp
           the system logfile, which records user logins.

      /etc/wtmp
           the system logfile, which records user logins and logouts.

      __apploaddir__/__default_class__
           the xterm default application resources.

      __apploaddir__/__default_class__-color
           the xterm color application resources.  If your display supports
           color, use this




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                                __app_date__



               *customization: -color

           in your .Xdefaults file to automatically use this resource file
           rather than __apploaddir__/__default_class__.  If you do not do
           this, xterm uses its compiled-in default resource settings for
           colors.

      __pixmapsdir__
           the directory in which xterm's pixmap icon files are installed.

 ERROR MESSAGES
      Most of the fatal error messages from xterm use the following format:

          xterm: Error XXX, errno YYY: ZZZ

      The XXX codes (which are used by xterm as its exit-code) are listed
      below, with a brief explanation.

      1    is used for miscellaneous errors, usually accompanied by a
           specific message,

      11   ERROR_FIONBIO
           main: ioctl() failed on FIONBIO

      12   ERROR_F_GETFL
           main: ioctl() failed on F_GETFL

      13   ERROR_F_SETFL
           main: ioctl() failed on F_SETFL

      14   ERROR_OPDEVTTY
           spawn: open() failed on /dev/tty

      15   ERROR_TIOCGETP
           spawn: ioctl() failed on TIOCGETP

      17   ERROR_PTSNAME
           spawn: ptsname() failed

      18   ERROR_OPPTSNAME
           spawn: open() failed on ptsname

      19   ERROR_PTEM
           spawn: ioctl() failed on I_PUSH/"ptem"

      20   ERROR_CONSEM
           spawn: ioctl() failed on I_PUSH/"consem"

      21   ERROR_LDTERM



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                                __app_date__



           spawn: ioctl() failed on I_PUSH/"ldterm"

      22   ERROR_TTCOMPAT
           spawn: ioctl() failed on I_PUSH/"ttcompat"

      23   ERROR_TIOCSETP
           spawn: ioctl() failed on TIOCSETP

      24   ERROR_TIOCSETC
           spawn: ioctl() failed on TIOCSETC

      25   ERROR_TIOCSETD
           spawn: ioctl() failed on TIOCSETD

      26   ERROR_TIOCSLTC
           spawn: ioctl() failed on TIOCSLTC

      27   ERROR_TIOCLSET
           spawn: ioctl() failed on TIOCLSET

      28   ERROR_INIGROUPS
           spawn: initgroups() failed

      29   ERROR_FORK
           spawn: fork() failed

      30   ERROR_EXEC
           spawn: exec() failed

      32   ERROR_PTYS
           get_pty: not enough ptys

      34   ERROR_PTY_EXEC
           waiting for initial map

      35   ERROR_SETUID
           spawn: setuid() failed

      36   ERROR_INIT
           spawn: can't initialize window

      46   ERROR_TIOCKSET
           spawn: ioctl() failed on TIOCKSET

      47   ERROR_TIOCKSETC
           spawn: ioctl() failed on TIOCKSETC

      49   ERROR_LUMALLOC
           luit: command-line malloc failed



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 XTERM(1)                      __app_version__                      XTERM(1)
 X Window System                                             X Window System

                                __app_date__



      50   ERROR_SELECT
           in_put: select() failed

      54   ERROR_VINIT
           VTInit: can't initialize window

      57   ERROR_KMMALLOC1
           HandleKeymapChange: malloc failed

      60   ERROR_TSELECT
           Tinput: select() failed

      64   ERROR_TINIT
           TekInit: can't initialize window

      71   ERROR_BMALLOC2
           SaltTextAway: malloc() failed

      80   ERROR_LOGEXEC
           StartLog: exec() failed

      83   ERROR_XERROR
           xerror: XError event

      84   ERROR_XIOERROR
           xioerror: X I/O error

      85   ERROR_ICEERROR
           ICE I/O error

      90   ERROR_SCALLOC
           Alloc: calloc() failed on base

      91   ERROR_SCALLOC2
           Alloc: calloc() failed on rows

      102  ERROR_SAVE_PTR
           ScrnPointers: malloc/realloc() failed

 BUGS
      Large pastes do not work on some systems.  This is not a bug in xterm;
      it is a bug in the pseudo terminal driver of those systems.  Xterm
      feeds large pastes to the pty only as fast as the pty will accept
      data, but some pty drivers do not return enough information to know if
      the write has succeeded.

      When connected to an input method, it is possible for xterm to hang if
      the XIM server is suspended or killed.




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 X Window System                                             X Window System

                                __app_date__



      Many of the options are not resettable after xterm starts.

      This program still needs to be rewritten.  It should be split into
      very modular sections, with the various emulators being completely
      separate widgets that do not know about each other.  Ideally, you'd
      like to be able to pick and choose emulator widgets and stick them
      into a single control widget.

      There needs to be a dialog box to allow entry of the Tek COPY file
      name.

 SEE ALSO
      resize(__mansuffix__), luit(__mansuffix__), uxterm(__mansuffix__),
      X(__miscmansuffix__), pty(4), tty(4)

      Xterm Control Sequences (this is the file ctlseqs.ms).

      https://invisible-island.net/xterm/xterm.html
      https://invisible-island.net/xterm/manpage/xterm.html
      https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
      https://invisible-island.net/xterm/xterm.faq.html
      https://invisible-island.net/xterm/xterm.log.html

 AUTHORS
      Far too many people.

      These contributed to the X Consortium: Loretta Guarino Reid  (DEC-UEG-
      WSL),  Joel  McCormack  (DEC-UEG-WSL),  Terry  Weissman (DEC-UEG-WSL),
      Edward Moy (Berkeley), Ralph R. Swick (MIT-Athena),  Mark  Vandevoorde
      (MIT-Athena),  Bob  McNamara  (DEC-MAD),  Jim Gettys (MIT-Athena), Bob
      Scheifler  (MIT  X  Consortium),  Doug  Mink  (SAO),  Steve   Pitschke
      (Stellar),  Ron  Newman  (MIT-Athena),  Jim Fulton (MIT X Consortium),
      Dave Serisky (HP), Jonathan Kamens (MIT-Athena).

      Beginning with XFree86, there were far more identifiable contributors.
      The  THANKS file in xterm's source lists 189 at the end of 2017.  Keep
      in mind these: Jason Bacon, Jens Schweikhardt, Ross Combs, Stephen  P.
      Wall, David Wexelblat, and Thomas Dickey (invisible-island.net).














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