• 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 4.0|Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
    • GFDL|GFDL: GNU Free Documentation License
    • GPL|GPL: GNU General Public License
    • LGPL|LGPL: GNU Lesser General Public License
  • Non-free license (exception):
    • CopyrightByWikimedia|Wikimedia images