@oxenter
COMMAND: 
@oxenter <object> = <message>
ATTRIBUTE: Oxenter
Sets the message (prefixed by the player's name) that is shown to others in the location being left when someone enters <object>. Note that the message is shown to those outside the object, not those inside.
This attribute is meaningful for players, things, and rooms, and will never be automatically triggered on exits.
Example: @oxenter wormhole = climbs into the wormhole and vanishes.