control box including an inner region positioned within an outer region, wherein a size of the inner region relative to the outer region represents the magnification of the original image being displayed within the image display window and further wherein a position of the inner region within the outer region represents the portion of the original image being displayed within the image display window and changing the size and position of the inner region in response to input commands. The size of the inner region is decreased when an input command is entered selecting the inner region. The size of the inner region is increased when an input command is entered selecting the outer region. The input commands are entered using a cursor control device and the innerMr. Sharp was stopped by the Richland police at approximately 1 a.m. on July 14, 1974, while driving home with David Dauenhauer as his passenger. Mr. Sharp was placed under arrest, orally advised of his constitutional rights, and asked for permission to search the pickup he was driving. Mr. Sharp stated, "Go ahead and search. You won't find anything." The search revealed a partially smoked *587 marijuana cigarette in the ashtray, a small aluminum can of marijuana, five packages of cigarette papers, two rolling devices, and a plastic pill bottle containing three squares of "window pane" LSD. Mr. Dauenhauer was later arrested. Sharp and Dauenhauer denied knowledge and possession of the LSD. Mr. Sharp admitted smoking the marijuana cigarette and Mr. Dauenhauer admitted possession of the can of