Patrolling log events mark revisions as patrolled.
Every user with the "patrol" permission is able to review article changes. By default, only the "sysop" (admin) group has this permission. You can optionally add "patrol" to an additional group:
$wgGroupPermissions['team']['patrol'] = true;
Users with the "autopatrol" permission have their changes automatically marked as patrolled. The below configuration means that changes made by users in the "sysop", "bot", and "team" groups are automatically reviewed:
$wgGroupPermissions['bot']['autopatrol'] = true; $wgGroupPermissions['sysop']['autopatrol'] = true; $wgGroupPermissions['team']['autopatrol'] = true;
Patrol log events have a patrol child element, e.g.
<patrol cur="12" prev="0" auto="1" />