Syntax: knock <doorname> [direction]
The knock command lets you knock on a door, hatch, trapdoor, or similar barrier to alert whoever may be on the other side. The direction is optional — it is only needed if multiple doors with the same name exist in the same room.
Knocking does not open the door; it simply produces a sound that NPCs or other players on the far side may hear and react to. To actually pass through a door you must open it first.
