MediaWiki:Licenses
- Unknown_copyright|I don't know exactly
- Free licenses:
- PD|PD: public domain
- CC-by-nc-sa-3.0|CC BY-NC-SA: Creative Commons Attribution NonCommercial ShareAlike 3.0
- GFDL|GFDL: GNU Free Documentation License
- GPL|GPL: GNU General Public License
- LGPL|LGPL: GNU Lesser General Public License