MediaWiki:Tpt-transclusion-help

If enabled, pages that transclude this page as a template will instead transclude the translation in the language of the transcluding page (or the source language if that translation doesn't exist yet). For example, if you try to transclude this page in a German-language page, it will transclude the page "$1" instead. This works reliably if the transcluding pages also use page translation, but may fail if they are translated manually. Disable this setting if the page handles translation on its own (for example to support manually translated pages, or to use the user interface language instead of the page language), as otherwise the wikitext of the page itself will be completely ignored during transclusion. This setting has no effect if the page is never transcluded.