The disclosure describes improved systems and methods for displaying a trend history of the patient condition using pictorial representations that dynamically change as the clinician advances and reverses through an independent parameter. The window shade comprises a curved winding shaft that includes a tubular axle, a plurality of axially connected shaft sections mounted on the axle for relative rotational movement, and a winding spring supported within the axle having one end fixed to the axle and the other end secured to a shaft section. For lithographic printing or other printing methods using plates, a ratioing algorithm is used to determine the optimum number of plates and label layout on each plate to minimize production costs.