Super users are one or more trusted user names with permission to do wiki-wide operations that are more than simple administration rights (usually handle ACLs, delete pages, revert content).
What can a Superuser do?
- Use despam action to mass revert edits of some user
Use SystemAdmin page
- Make full backups
- Install software
Install Languages via SystemPagesSetup .
- In their settings screen, they have a list of other users they can temporarily "become" in order to help those users or even disable that account. Logging out puts them back into their regular account.