“ Help:Transclusion What is transclusion? "Transclusion" is the way we get text from the Page namespace to the main namespace. The Page namespace is where text is meant to be proofread. The main namespace is where text is meant to be read.
Transclusion copies the text across whenever anyone wants to read the page in the main namespace. It is still linked to the Page namespace. ”

“ See {{header}} for more information.
The transclusion code is the same as with the simple transclusion except the "header" attribute should be excluded. (This is the part of the code that creates the "magic header".) ”