The user should be able to select the pointer or controller tracking speed (control-display ratio) from a predefined range; the default speed should be moderate.
Additional Information: Control ratios and dynamic features should meet the dual requirement of rapid gross positioning and smooth, precise fine positioning. The control/display ratios should consider both screen size and maximum maneuvering displacement. At a minimum, movement of the controller across the entire maneuvering surface should move the cursor from one side of the screen to the other. 5908