Help:Self link

A self link is a link to the page itself. It appears as bold text when the article is viewed ("self-link feature"). Examples:
 * Help:Self link gives Help:Self link
 * piped self link gives piped self link

Self links are usually not recommended. One exception is within a text that is transcluded between several pages. Per the TechInfoDepot:Manual of Style, you should not use self-links to make the article name bold in the first paragraph.

Self-link to a section
A link to a section of the same article, even from the same section, does not cause bold text and it works as a normal link: Help:Self link. Such links can also be written without the page name:. An automatically generated table of contents has links to sections on the page.

Indirect self links
An indirect self link is a link to a page that redirects back. In this case, the self-link feature does not work, even though the feature would be equally useful, this is demonstrated here:
 * Self link

Also, when the prefix for the project itself is added (interwiki link style, but again linking to the page itself) the self-link feature does not work, this is demonstrated here:
 * Help:Self link gives Help:Self link

Related changes feature
A self link for use with the "Related changes" feature only works if the link is to an existing or non-existing section. If it cannot be made useful as a link to a section, use a piped link with a blank space as label, e.g. , showing up as " ".