@link

@LINK (object|direction) = (#nnn|HERE|HOME|BACK|RETURN)

Links an (object) to a room or links a (direction) to a destination.
For things and players, sets the 'home' room.
For rooms, sets the 'drop-to' room.
For exits, sets the destination room; exits must be unlinked and you
must control the target room or it must be link_ok.
Wizards can link objects in other rooms using (#nnn) or (*player).

back,
costs,
drop-to,
here,
home,
link_ok,
open,
return,
targets,
there,
or return to The Index.