Interwiki Links
From MoodleDocs
Moodle Docs now uses InterWiki links for each supported language including special langs such as "dev" (this wiki)
The link is placed in different locations depending on whether a leader colon (:) is used or not.
Examples:
Leading colons are treated as InterWiki links [[:en:About_Moodle|About_Moodle in English]]
Without a leading colon the link is treated as an InterLanguage link and will be displayed in a new sidebar block [[en:About_Moodle]]
This behaviour can be disabled by $wgHideInterlanguageLinks and $wgInterwikiMagic
