Help:Page name

Case-sensitivity of the first character

The first character of the page name (after the namespace prefix, if applicable) may or may not be case-sensitive, depending on the project (see mw:Manual:$wgCapitalLinks). Help:page name gives on this project: Help:page name. If the first character of the page name is case-sensitive this is a link (to a different page), otherwise it is bold (a self link to this page). Any result of Special:Export shows <case>case-sensitive</case> or <case>first-letter</case>, respectively.

On Wikimedia projects currently the first character of the page name is case-insensitive, except in all Wiktionaries. Compare e.g. wikt:de:A and wikt:de:a.

Where the first character is case-insensitive, the canonical form is with a capital.

Note that this only applies to the first character of the page name. In the case of a "prefix" that is not defined for the software, the case-insensitivity does not apply to the first character after this "prefix", e.g. Template:H:h Help and Template:H:H Help are distinguished.