Manual:$wgUseTagFilter

Recent changes, new pages, watchlist and history: $wgUseTagFilter
Allow filtering by change tag in recentchanges, history, etc.
Introduced in version:1.15.0 (r47767)
Removed in version:Still in use
Allowed values:(boolean)
Default value:true

Details

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Allow filtering by change tag in recent changes, page history, user contributions and new pages.

Has no effect if no tags are defined in the valid_tag database table and there are no extensions enabled which have defined their own tags.[1]

Notes

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  1. Extensions can define and store their own tags and make them available by using the ListDefinedTags hook. Extension:AbuseFilter does this: when creating one or more filters which tag edits for review, filtering by change tag in recentchanges, etc. is enabled when $wgUseTagFilter is set to true.