Description

Searches for pages that are subpages of this page.

Be aware of the following

You can only search for subpages of one page at a time.
Don’t forget to enable the namespaces you want to limit your search to in the namespace filter.
Do not include the namespace in front of the page name like this: ~~Wikipedia:Redirect~~.

Help page: Subpageof
Syntax-equivalent in the normal search: subpageof: followed by a page name like subpageof:Redirect. Use double quotes if the parent page contains spaces: subpageof:"Requests for comment".