This page lists the tags that the software may mark an edit with, and their meaning.
mw-reverted
mw-manual-revert
mw-blank
mw-new-redirect
mw-contentmodelchange
mw-removed-redirect
mw-changed-redirect-target
mw-replace
mw-rollback
mw-undo
mw-server-side-upload
mw-add-media
mw-remove-media