POS is released under the AGPL V3 (GNU Affero General Public License).
Copyright (C) 2014 Andreas Dander
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
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 Affero General Public License for more details
http://www.fsf.org/licensing/licenses/agpl-3.0.html.