An optical wavefront correction plate incorporates a unique, three-dimensional spatial retardation distribution utilizing the index of refraction change of resin mixture in its cured state. A first instance of an instruction for a graphics processing unit may be received. A generally vertically oriented backrest panel is attached to a rear side of a horizontal seating panel. Next, the system generates a start value and a step value based on the data identifier. A pad electrode has first to third portions provided on the first to third regions of the semiconductor regions, respectively. In a preferred embodiment, the bracket comprises a thin, elongate body formed of cold rolled steel with a plurality of holes formed therein.