Grid and stylus devices may be used for picking data from a display and entering points on a display. Additional Information: Displacement of the stylus from the reference position should cause a proportional displacement of the follower. The grid may be on a transparent medium allowing stylus placement directly over corresponding points on the display, or it may be displaced from the display in a convenient position for stylus manipulation. In either case, a follower should be presented on the display at the coordinate values selected by the stylus. 5908