1. A system for rotating an object on a display screen comprising: a. means for displaying a object at a current angle; and b. means for receiving a action of a input device; and c. means for loading a raster image having an angle nearest to said current angle in response to said input device action and displaying said raster image on said means for displaying; whereby the object is displayed at a higher quality but the raster image may be at an angle that is only approximately the current angle.