|This feature was removed completely in version 1.6.0.|
|User Access: $wgAllowAnonymousMinor|
|Allow anonymous users to mark changes as "minor"
|Introduced in version:||1.2.0|
|Removed in version:||1.6.0|
|Other settings: Alphabetical | By function|
Allow anonymous users to mark changes as "minor"
Another way to do this is adding this to LocalSettings:
$wgGroupPermissions['*']['minoredit'] = false;