This category may not be up to date; it may not show all extensions that use this hook. You can view this MediaWiki Code search query to see the most up-to-date version of all extensions that use this hook.
The CanonicalNamespaces category contains pages on extensions that use the CanonicalNamespaces hook.
Pages in category "CanonicalNamespaces extensions"
The following 17 pages are in this category, out of 17 total.