Translations:Help:System message/833/en
Before MediaWiki 1.43, override message keys (using hooks like $2) were not shown either, which made it difficult to identify the source of messages overridden by extensions (such as $4).
Before MediaWiki 1.43, override message keys (using hooks like $2) were not shown either, which made it difficult to identify the source of messages overridden by extensions (such as $4).