& @lock locks
 
  You can set the following locks:
 
     DefaultLock:  Exits:          controls who may traverse the exit 
                                   to its destination.
                   Rooms:          controls whether the player sees 
                                   the SUCC or FAIL message for the 
                                   room following the room 
                                   description when looking at the 
                                   room.
                   Players/Things: controls who may GET the object.
     EnterLock:    Players/Things: controls who may ENTER the object 
                                   if the object is ENTER_OK. Also, 
                                   the enter lock of an object being 
                                   used as a Zone Master Object 
                                   determines control of that zone.
     GiveLock:     Players/Things: controls who may give the object.
     LeaveLock:    Players/Things: controls who may LEAVE the object.
     
     LinkLock:     All but Exits:  controls who may link to the 
                                   location if the location is LINK_OK 
                                   (for linking exits or setting drop-
                                   tos) or ABODE (for setting homes)
     PageLock:     Players:        controls who may page the player.
     ParentLock:   All:            controls who may make @parent links 
                                   to the object.
     ReceiveLock:  Players/Things: controls who may give things to the 
                                   object.
{ 'help @lock locks2' for more }