In door knocker, a door is either unlocked, locked or hidden If i open a locked door, with !knock --key|open, then the only way to close it is to reuse --key|close. But in fact, now the door is open, so the next one should be able to only push it I have not seen this functionality. It would be good to be able to change from one type to another the closest door for instance, to have better control Same for an hidden door, using reveal opens it. But may be the player only fond the hidden door but it is still locked. So when revealing a door we should be able to give the target color, either locked or unlocked. May be functionality is already here and i missed also ! :) that's why i am asking :)