- Unknown_copyright|I don't know exactly
- Free licenses:
- MW-screenshot|MediaWiki screenshot
- PD|PD: public domain
- CC-by-sa-2.5|Creative Commons Attribution ShareAlike 2.5
- CC-by-nc-sa-4.0|Creative Commons Attribution NonCommercial ShareAlike 4.0
- GFDL|GFDL: GNU Free Documentation License
- GPL|GPL: GNU General Public License
- LGPL|LGPL: GNU Lesser General Public License
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