Situation: I am standing in front of the door and there is a copier on my left, we use the copier to scan documents.
Alternative situations: I had enough of trying to figure how to use the photocopier on my left, so I am walking of the room via the door in front of me. I am looking at something on the door. The copier is to my left.
Question: If I don't want the light to come into the room to the left side, what should I close?