Help:Subpages
Subpages introduce some hierarchical organisation into wiki page names, with levels of the hierarchy separated by slashes '/'.
Namespaces
MediaWiki's subpage feature is turned off by default in the main namespace, but can be used on talk pages and user pages. See Help:namespaces. In namespaces where the feature is switched off, any slashes (/) within a page name are simply part of the page name and do nothing special.
Slashes within a page name
Slashes (/) within a page name break the page into parent and subpages, recursively, eg:
A link back to parent will automatically appear at the top of each subpage. In the case of sub-sub-pages, a set of breadcrumb navigation links will automatically be presented. Note that these links do not appear, however, if the parent page has not yet been created.
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