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???? : Colon trick

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The colon trick is a method of providing a link to a category , image or interwiki link without adding the page to the category, displaying the image or adding the interwiki link to the interlanguage links . It also allows for linking to pages with titles beginning with a recognized external link prefix, such as http:// or //Hus .

By adding a colon just inside the opening double square brackets of the link, the default behaviour of the MediaWiki software will be bypassed. It will appear as a conventional wikilink .

Examples [ ???????? ]

  • [[Category:Help]] would list this page in Category:Help, but [[:Category:Help]] will produce a link to Category:Help .
  • [[File:Wikipedia-logo.png]] would display an image, but [[:File:Wikipedia-logo.png]] will produce a link to File:Wikipedia-logo.png .
  • [[pt:Internet]] will create an interlanguage link , but [[:pt:Internet]] will produce an interwiki link to pt:Internet (in the Portuguese Wikipedia).
  • [[//Hus]] will produce an (invalid) external link wrapped in brackets ("[ [1] ]"), but [[://Hus]] will produce a link to //Hus .
  • [[Computer]] links to the Computer article; adding a colon like [[:Computer]] can be done, but the colon is unneeded and makes no difference.

With templates [ ???????? ]

A colon can also be used to transclude a page in mainspace, rather than template space. For example, {{ The Beatles }} will transclude Template:The Beatles , but {{ :The?Beatles }} will transclude the mainspace article The Beatles . This is useful when the mainspace article has been specially formatted to be transcluded in other articles, by using <noinclude> or <includeonly> tags to indicate the portion that should be included when the article is transcluded.

With edit summaries [ ???????? ]

Normally, linking to a user page in an edit summary sends a notification to the user. A colon can be used to escape this behaviour. For example, the edit summary " corrected?typo?by?[[User:Example]] " will ping User:Example , but " corrected?typo?by?[[:User:Example]] " will not.