- Unknown_copyright|I don't know exactly
- Free licenses:
- PD|PD: public domain
- CC BY-NC-SA-4.0|Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
- GFDL|GFDL: GNU Free Documentation License
- GPL|GPL: GNU General Public License
- LGPL|LGPL: GNU Lesser General Public License
- Non-free license (exception):
- CopyrightByTheMidnight|The Midnight