MediaWiki:Apihelp-query+langbacklinks-extended-description
From YoungHerculesWiki
⧼monobook-jumptonavigation⧽⧼monobook-jumptosearch⧽
Can be used to find all links with a language code, or all links to a title (with a given language). Using neither parameter is effectively "all language links".
Note that this may not consider language links added by extensions.
