Deletion-related rights
Appearance
$wgGroupPermissions['sysop']['delete'] = true;
$wgGroupPermissions['sysop']['bigdelete'] = true; // can be separately configured for pages with more than $wgDeleteRevisionsLimit revs
$wgGroupPermissions['sysop']['deletedhistory'] = true; // can view deleted history entries, but not see or restore the text
$wgGroupPermissions['sysop']['deletedtext'] = true; // view deleted text or changes between deleted revisions
$wgGroupPermissions['sysop']['undelete'] = true;
#$wgGroupPermissions['sysop']['deleterevision'] = true;
#$wgGroupPermissions['suppress']['suppressrevision'] = true;
#$wgGroupPermissions['suppress']['suppressionlog'] = true;