Manual:$wgAllowSpecialInclusion

Special pages: $wgAllowSpecialInclusion
Allow special page inclusions such as {{Special:Allpages}}.
Introduced in version:1.5.0
Removed in version:Still in use
Allowed values:(boolean)
Default value:true

Details

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See also Transclusion#Special pages

Allow special page inclusions such as Special:AllPages, Special:PrefixIndex, Special:NewFiles, Special:NewPages, Special:RecentChanges and Special:RecentChangesLinked.