Manual:$wgUseMetadataEdit

Site customization: $wgUseMetadataEdit
Whether to use metadata edition.
Introduced in version:1.5.0 (r6887)
Removed in version:1.16.0
Allowed values:(boolean)
Default value:false

Details

edit

Whether to use metadata edition.

This will put categories, language links and allowed templates in a separate text box while editing pages.

This setting exists since r6887 but has only been added in DefaultSettings.php in r40925.