Wall lighting can fulfil a number of tasks. Firstly, it can be aimed at fulfilling vertical visual tasks on the walls, whether this be informative material such as notice boards, presentational objects such as paintings or merchandise, architectonic structures or the surface of the wall itself. Wall lighting can, however, also be aimed solely at presenting the wall in its capacity as the surface delineating the room; finally, wall illumination can be a means of indirect general lighting for a room.