Help:What links here

Within the Toolbox section on the left-hand side of every page is a link labeled "What links here". This is used to see a list of the pages that link to (or redirect to, or transclude) the current page. These are sometimes referred to as backlinks.

It is also possible to list the pages with {{Special:Whatlinkshere/Page name|namespace=number}}, where Page name is the name of the page, and namespace (optional) is the number of the namespace. E.g. {{Special:Whatlinkshere/Help:What links here|namespace=0}} lists all pages from article space that link to this page.

To use the tool, click and type in the page title.

This information comes from the and the . Pages redirected to the given page are marked "redirect". Pages transcluding the given page are marked "transclusion"; for these pages it is not shown whether they also link to the given page. For image and other file pages, the pages using the image or file appear on the list and are marked "image link".

The parser function causes a listing in "What links here" among the normal links even though no link is produced.

The list of links to an article is useful in a number of ways:

The function works even for a page title that does not exist (recording redlinks to that title). The "What links here" link appears on the edit page on which one arrives when following a broken link. Thus, for example, if film articles are linked to the actors, one can find the films an actor has played in even if there is no article about the actor.

The following links are not listed at "What links here":

In the case of links to sections or other anchors, the precise target is not shown. "What links here" cannot list the backlinks of a specific section/anchor only. (It may be possible to work round this by making a new title that redirects to a particular section, and encouraging people to make links to the redirect rather than the section. Another possibility is to use Linksearch, but here users would have to add hidden external links.)

Also note that if a page's links change because of a change in a template, the backlinks for that page are , but via the job queue.

The What links here report will list a redirect to a page, and indented under it any incoming links to the page that go through that redirect.

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Wikipedia