Manual:UpdateSpecialPages.php

Details
updateSpecialPages.php file is a maint-scripts>Special:MyLanguage/Manual:Maintenance scripts|maintenance script to update the information on the special pages that cache results in the  table.

This information includes Special:WantedTemplates, Special:Wantedpages and Special:Wantedfiles among many others. A full list is found in. Extensions may extend this list using the wgQueryPages hook so that special pages added by that extension will be covered by this maintenance script.

The configuration setting  can be used to exclude certain special pages from being updated.