• Unknown_copyright|I don't know exactly
• Free licenses:
  • MW-screenshot|MediaWiki screenshot
  • PD|PD: public domain
  • CC0| CC0 CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
  • CC BY-SA|CC BY-SA 4.0 : Creative Commons Attribution ShareAlike 4.0
  • GPL|GPL : GNU General Public License
  • GNU AGPL : |GNU Affero General Public License
  • LGPL|LGPL: GNU Lesser General Public License
  • GFDL|FDL : GNU Free Documentation License
• Non-free license (exception):
  • CopyrightByWikimedia|Wikimedia images