This thesis is focused on the study of information media in museum space. Didactic panels, literally the writing on the wall, are standard practice in the planning and execution of exhibitions. The composition and use of these panels can be described as an institutional technology, instrumental in the construction of power. This project investigates how the production and placement of didactic panels in museums and galleries creates and maintains relationships of power between the viewer and the institution. To investigate this relationship, a participant observation study focused on visitor use and movement patterns was completed, as well as interviews with visitors to draw out their understanding of how didactics function within a museum space. These two methods combine to create a vivid picture of how the use of didactics fits into a network of the exertion of power over the visitor.