If set on a player, indicates that the player is a robot and is allowed to use the OUTPUTPREFIX and OUTPUTSUFFIX commands that many publicly availablle robot programs require. Some games do not restrict access to the OUTPUTPREFIX and OUTPUTSUFFIX commands.
If set on an exit or a thing, indicates that robot players may not use the exit or pick up the thing, the player is treated as having failed the lock. This can restrict the region that mobile robot programs are allowed to explore and the items they can gather.
See also: @robot