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  fltk(3)                                 6           January           2002
 fltk(3)
                              Fast Light Tool Kit



  NAME
       fltk - the fast light tool kit


  SYNOPSIS
       The Fast Light Tool Kit ("FLTK") is a cross-platform C++ GUI toolkit
       for UNIX(r)/Linux(r) (X11 and Wayland), Microsoft(r) Windows(r), and
       macOS(r).  FLTK provides modern GUI functionality without bloat and
       supports 3D graphics via OpenGL(r) and its built-in  GLUT  emulation.
 It
       was originally developed by Mr. Bill Spitzak and is currently
       maintained by a small group of developers across the world with a
       central repository on GitHub.  FLTK is provided under  the  terms  of
 the
       GNU Library General Public License, with the following exceptions:

            1. Modifications to the FLTK  configure  script,  config  header
 file,
            and makefiles by themselves to support a  specific  platform  do
 not
            constitute a modified or derivative work.

            The authors do request that such modifications be contributed to
            the FLTK project - send all contributions through the "Software
            Trouble Report" on the following page:

                https://www.fltk.org/bugs.php

            2.  Widgets  that  are  subclassed  from  FLTK  widgets  do  not
 constitute
            a derivative work.

            3. Static linking  of  applications  and  widgets  to  the  FLTK
 library
            does not constitute a derivative work and does not require the
            author to provide source code for the application or widget, use
            the shared FLTK libraries, or link their applications or widgets
            against a user-supplied version of FLTK.

            If you link the application or widget to a modified version of
            FLTK, then the changes to FLTK must be provided under the  terms
 of
            the LGPL in sections 1, 2, and 4.

            4. You do not have to provide a copy of the FLTK license with
            programs that are linked to the FLTK library, nor do you have to
            identify the FLTK license in your program or documentation as
            required by section 6 of the LGPL.

            However, programs must still identify their use of FLTK. The
            following  example   statement   can   be   included   in   user
 documentation
            to satisfy this requirement:

            [program/widget] is based in  part  on  the  work  of  the  FLTK
 project
            (https://www.fltk.org).

  SEE ALSO
       fltk-config(1), fluid(1)



                                     -  1  -         Formatted:   April  28,
 19126






  fltk(3)                                 6           January           2002
 fltk(3)
                              Fast Light Tool Kit



       FLTK Programming Manual
       FLTK Web Site, https://www.fltk.org/

  AUTHORS
       Bill Spitzak and others.

















































                                     -  2  -         Formatted:   April  28,
 19126