Wikipedia:Tip of the day/May 8

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Displaying one page within another = Transclusion

Including the contents of a template page on a different page (by surrounding the page name with double braces, ie. "{{}}") and leaving out the "Template:" prefix) is called transclusion.

This allows the other page to be automatically updated whenever the template page is updated.

Besides templates, pages in the following namespaces can be transcluded:

  • Category:
  • Help:
  • Portal:
  • User:
  • Wikipedia:

The only difference between transcluding these and templates is that you must include the prefix (followed by a colon) with the page's name inside the double braces.

Images also can be transcluded, but this is done using double square brackets instead of braces.

Here are some examples of transclusion:

{{Pic of the day}} • {{Help:Contents}} • [[Image:Wikipedia-logo.png]]

Read more: Wikipedia:Transclusion

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