MediaWiki:Licenses

• Unknown_copyright|I don't know exactly
• Free licenses:
  • PD|PD: public domain
  • CC-by-sa-3.0|Creative Commons Attribution ShareAlike 3.0
  • CC-by-4.0|Creative Commons Attribution 4.0
  • GFDL|GFDL: GNU Free Documentation License
• Non-free / fair use:
  • Non-free external|From external source, no free license available