Manual:Copyright

The copyright on a page is set at installation and can be adjusted by changing the sitewide copyright notice located at Mediawiki:Copyright and adding this line to the LocalSettings.php file: $wgRightsPage = "MediaWiki:Copyright";

The copyright notice can be completed eliminated from the footer by changing the skins -> MonoBook.php file.

MediaWiki 1.14 will presumably allow a public domain licensure option, in addition to the present Creative Commons, GFDL, and no licensing options.