Manual:$wgWantedPagesThreshold

Performance hacks and limits: $wgWantedPagesThreshold
Minimum number of pages that must link to a page before it will appear on Special:Wantedpages.
Introduced in version:1.5.7 (r13047)
Removed in version:Still in use
Allowed values:(integer)
Default value:1

Details

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$wgWantedPagesThreshold is a configuration directive which determines how many times a nonexistent page must be linked to before it will appear on Special:Wantedpages. In older versions of MediaWiki, this defaults to 2; this configuration option was added due to popular user demand.