A dual path hydrostatic drive system having an electronic auxiliary drive auxiliary drive controller controlling the hydraulic output of left and right variable displacement pumps in response to the speed of the main drive wheels and a speed ratio signal from a speed ratio input control. The apparatus comprises a platform having a first surface for facing the bone. A payout determined by a combination of the symbols rearranged on a payline is awarded. The controller inputs a position error signal PES that is derived from a head current position signal output from the P, and outputs to addition point a control signal of a drive device for moving a magnetic head. A secret owning application can also request the SSC to create an object storing the encrypted secret, evidence associated with an intended recipient, and evidence associated with the owning application, in order to send the application secret to another code component. This device is particularly beneficial for implementing improved image quality techniques which can convert binary images to grey-scale images andor separate red, green and blue images into color images and displaying those images using the natural process of integration which occurs when a person views images at sufficiently high rates.