Help:Namespace prefixes

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The namespace prefix is the namespace identifier followed by a colon character (:). The default (Main) namespace is the "Article" namespace and is referred to with the empty string as namespace identifier, in which case the following colon character (:) is optional (unless you want to transclude the article page, where the colon is required).

For example, to create an internal [wiki] link to an article page, you may (preferably) use

[[Fibonacci numbers]] which yields Fibonacci numbers,

or (less commonly) use

[[:Fibonacci numbers]] which also yields Fibonacci numbers.

If you want to transclude an article page (although pages from the Template namespace are intended for transclusion, where you need not specify neither the Template namespace nor the following colon), you must use the colon, e.g.

{{:Fibonacci numbers}}.

To create an internal [wiki] link to a category, you must use the colon before and after the Category namespace identifier, e.g.

[[:Category:Fibonacci numbers]] which yields Category:Fibonacci numbers,

since not using the colon before, e.g.

[[Category:Fibonacci numbers]]

will categorize the page instead.

To create an internal [wiki] link to a file, you must use the colon before and after the File namespace identifier, e.g.

[[:File:Tower Sequences.png]] which yields File:Tower Sequences.png,

since not using the colon before, e.g.

[[File:Tower Sequences.png]]

will include the file instead.

There is also a virtual namespace identifier called "Special", which has no associated talk pages, e.g. no "Special_talk" namespace.

Table of namespace identifiers

Namespace identifiers

Namespace	Namespace talk pages
	Talk
User	User_talk
OeisWiki	OeisWiki_talk
File	File_talk
MediaWiki	MediaWiki_talk
Template	Template_talk
Help	Help_talk
Category	Category_talk
Extras	Extras_talk

See also

• {{namespace ID}} ({{ns ID}}) OEIS Wiki utility template
• {{Allpages}} OEIS Wiki utility template (giving a link to the list of all (or from start) pages in a given namespace)

• Help:Interwiki linking