Help:Transclusion
From Freegle Wiki
Transclusion refers to the inclusion of the content from one page within another page. This avoids the need to create or maintain duplicate copies of the same text or code.
Templates are pages created for this express purpose, but other pages such as articles or parts of articles can also be transcluded.
For more information see https://en.wikipedia.org/wiki/Help:Transclusion
