Copyright (C) Andrew Suffield Additional copyrights may be owned by other people; see the list of authors for full details. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2 only. 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 GNU General Public License for more details. On Debian GNU/Linux systems, the complete text of the GNU General Public License version 2 can be found in '/usr/share/common-licenses/GPL-2'.