A system and process for navigating unstructured or loosely structured image sets on a display screen is presented. , wherein the coating composition has a viscosity of from about 3 cP to about 5000 cP at 140 F. After each game event, the player is given an opportunity to terminate or continue the game session. The differential stage and cross-coupled stage can include variable currents sources, respectively. The superconducting field coil and the salient poles are configured relative to each other such when the rotor assembly is rotated relative to the stator assembly around a predetermined axis, a rotating magnetic field is produced with an airgap flux direction substantially along the predetermined axis.