CLOSE THE DOOR (when it is time to; not necessarily now)

Please close the door when leaving the building. Unless the building is supposed to be open. In which case there is no need to close the door. But if you do need to close the door, because the building is closed, first open the door so you can exit, and then close it behind you. You may face the door so that it is in front of you while closing it behind you. Open the door before leaving the building and close it after leaving the building.

LOCK THE DOOR (when it is time to; not necessarily now)

Please lock the door before leaving the building. Unless the building is supposed to be open, in which case you should not lock the door, but close it (see instructions for closing the door). If you are leaving the building and the building is supposed to be closed, check and make sure that no one else is in the building. Lock the door after checking that the building is empty and after leaving the building and closing the door (you can’t lock the door while it’s open). If this is all too difficult, you should just stay inside the building.

EXIT (but not right now. Unless it is time to go. If it is time to go, see instructions for closing the door and locking the door)