From Tapestries MUCK
Quota is a budget or restriction on the total number of things, rooms, and exits that a player may create. The quota exists to provide players a reasonable amount of resources to contribute content to the MUCK without overwhelming the system. There is a default quota. See the MUCK policy (Policy_Builder#Quota) for information on increasing quota.
The @quota command may be used in-game to check your quota usage. The output will look something like this:
Quota Report for: Playername(#dbref for player) Things...: X Rooms....: X Exits....: XX Total: XX Quota: 100 Programs.: X