 | This is an information page. It is not an encyclopedic article, nor one of Wikipedia's policies or guidelines; rather, its purpose is to explain certain aspects of Wikipedia's norms, customs, technicalities, or practices. It may reflect differing levels of consensus and vetting. |
 | This page in a nutshell: In categories, page names are sorted alphabetically. |
Wikipedia uses alphabetical ordering for page names in categories to make it easier to find what you are looking for. The special page which lists all pages on Wikipedia also uses alphabetical ordering.