@LINK 

@link <object>=<number>; @link <object>=here; @link <dir>|<room>=home. 
Links <object> to room specified by <number>. For things and players, 
sets the home room (See HOMES). For rooms, sets the drop-to room (See 
DROP-TOS). For exits, sets the target room; exits must be unlinked, 
and you must control the target room unless its LINK_OK flag is set. 
Wizards can @link objects in other rooms using #<number> or *<player>.