Thread:Project:Support desk/add text to footer/reply (3)

Not without an extension (do not hack the core files itself: https://www.mediawiki.org/wiki/Do_not_hack_MediaWiki_core). You can use Hooks to add elements to a specific point of the site, e.g. SkinAfterContent: https://www.mediawiki.org/wiki/Manual:Hooks/SkinAfterContent

You can customize the Copyrigth text with this hook: https://www.mediawiki.org/wiki/Manual:Hooks/SkinCopyrightFooter