SubSpace jargon for a person in charge of a zone (System Operator).
Usually the zone owners are sysops. Most bots require sysop to stay connected because they perform actions that would be considered cheating.
Sysops are granted power over lesser players. Sysops are generally the only staff members that can modify game files on the server such as maps or settings. Due to the remarkable insight of the original developers sysops have a range of commands that will give them an edge when playing against other players (aka cheating). Moderator and SMod commands are inherited.