The files in the src, lib, toolbin, examples, doc and man
  directories (folders) and any subdirectories (sub-folders)
  thereof are part of GNU Ghostscript.

  GNU Ghostscript is free software; you can redistribute it and/or
  modify it under the terms of version 2 of the GNU General Public
  License as published by the Free Software Foundation.

  GNU Ghostscript is distributed in the hope that it will be
  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program so you can know your rights and responsibilities.
  It should be in a file named doc/COPYING. If not, write to the
  Free Software Foundation, Inc., 59 Temple Place Suite 330, Boston, MA
  02111-1307, USA.