Help:Namespace

The aliases WP for , and WT for , work for page names in the search box, and making links, and making inclusions. See Aliases below for other aliases. (The pseudo-namespaces such as H for Help, and CAT for Category, are extremely limited. See Pseudo-namespaces below.)

The table on the right shows what number to use when you want to hide pages that are on your watchlist. See: for details.

A namespace is sometimes called a space, for short, as in "Project space". A subject page and its talk page form a pair.

An alias of a namespace is its namespace. For example, WP: is , and so can be abbreviated [[WP:Page name]]. See Aliases below, for a list of aliases, such as WT: for . A pseudo-namespace is an agreement to create redirect pages named that way, each of which is a shortcut from mainspace to a single page in its namespace. So an alias refers to any page in its namespace, but a pseudo-namespace has far fewer pages than its real namespace. There are a few pseudo-namespace names like H: for Help:, and CAT: for Category:, and these can be discovered below in the section Pseudo-namespaces.

Each of the above namespaces (but not the virtual namespaces and the former Topic: namespace) has an associated talk namespace—these are also known as discussion pages. The talk namespaces are designated by appending the word talk to the namespace name. For example, the talk namespace associated with the user namespace has the prefix User talk:. The talk namespace associated with the article namespace is Talk:.

Most of the pages in the talk namespaces are used to discuss changes to the corresponding page in the associated namespace. Pages in the user talk namespace are used to leave messages for a particular user. The user talk namespace is special in that, whenever a user's talk page is edited, that user will see an orange box saying "You have new messages" on the top of every page that they view until they visit their talk page. By default, logged-in users will see a red notification square and a small orange box on the top right hand corner of the page; IP users will only see a wide orange box spanning the top of the page. (Minor edits made by bots no longer set off the new message bar. For logged-in users, the new-message bar may be disabled in .)

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