Categories All In One is free software licensed under the GNU General Public
License, version 2 or any later version (GPL-2.0-or-later).

You may redistribute and modify this software under those terms. The software
is provided without warranty, including the implied warranties of
merchantability or fitness for a particular purpose.

The full license text is available at:
https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
