This picture (taken from Françoise Decortis, Samuel Noirfalise, Berthe Saudelli: Activity theory, cognitive ergonomics and distributed cognition: three views of a transport company. Int. J. Hum.-Comput. Stud. 53(1): 5-33 (2000)) is an interesting example of how to describe an activity according to the Activity Theory. It depicts the structure of the activity, the viewpoint of an entire team of dispatchers (adapted from Engestrom, 1993).