GOTCHA is developed by Lawrence Livermore National Security.
The following copyrights apply:

Copyright (c) 2020, Lawrence Livermore National Security, LLC. Produced at
the Lawrence Livermore National Laboratory. Written by David Poliakoff 'poliakoff1 at llnl dot gov'
and Matthew LeGendre 'legendre1 at llnl dot gov'. CODE-730558. All rights reserved.

This program is free software; you can redistribute it and/or modify it under 
the terms of the GNU Lesser General Public License (as published by the Free Software
Foundation) version 2.1 dated February 1999.  This program 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 terms and conditions of the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along 
with this program; if not, write to the Free Software Foundation, Inc., 59 
Temple Place, Suite 330, Boston, MA 02111-1307 USA.