Show only items that meet these criteria, e.g. non minor edits only: $2show=!minor. If $2show=patrolled or $2show=!patrolled is set, revisions older than [[mw:Manual:$wgRCMaxAge|$wgRCMaxAge]] ($1 seconds) won't be shown.
MediaWiki:Apihelp-query+usercontribs-param-show
From Adaptive Population based Simplex
