@lock

 @lock <object>=<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'). A key may be a player, an object, or 'property:value'.