@LOCK 

@lock <object>[/<attr>]=<key>. Locks <object> to a specific key(s). <object> 
can be specified as <name> or #<number>, or as 'me' or 'here'. Boolean 
expressions are allowed, using '&' (and), '|' (or), '!' (not), and 
parentheses ('(' and ')') for grouping. To lock to a player, prefix 
their name with '*' (ex. '*Igor'). The optional <attr> argument specifies
which lock attribute to use, and can be either "lock" or "elock". This
defaults to "lock" (See ENTER).

Locks can be set for or against wizzes by using "flag:WIZARD" for an object
name, and set for or against robots by using "flag:ROBOT".

See the examples.