The polycyclic package is free software; you can redistribute and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your opinion) any later version.

The polycyclic package 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 systems, the complete text of the GNU General Public License
version 2 can be found in ‘/usr/share/common-licenses/GPL-2’.