Administrators, or sysops, are users who can edit any page or do certain tasks that a normal user cannot do, such as banning vandals. They also leave messages for users, telling them about their mistakes or correcting them. Administrators are selected on an as-needed basis only. As Nintendo Wiki expands, more administrators may be needed to assist in its operation. There are no official criteria to become an administrator, however there are a few basic guidelines. When an administrator is needed, one will be selected from the rest of the users who: