“…To study wayfinding aids, the authors of the papers referenced here typically compare the performance of the users on some task with different wayfinding aids. Typically the task involves: searching for a target object [EH97, RCvD97, EF08, WZHZ09, finding a number of targets in a specified order [CB04,BC07], exploring the space, finding the target, and returning to the starting point [DS93], finding a path to a specific object [CS01,CV06], direction estimation [CV06], learning the environment and, for example, sketching its map [DS96, RM99 or placing target objects on the map [BKH98, ETT08].…”