williams-et-al-1983-apple-ii-computer-graphics

GLOSSARY 185SEPARATION. Any one of the seven versions of a figure required tomove a byte-move figure horizontally. Each separation is shifted acrossone screen dot from the previous one.SHAPE. SHAPE is an Apple graphics construct. Any figure on the screencan be digitized so that it will operate with the APPLESOFT DRAW,XDRAW, ROT, and SCALE commands. Digitizing the shape can be acomplex process, but a Hi-Res editor takes care of all the grubby detailsso that creating shapes is a quick, simple task.SHAPE TABLE. A number of shapes strung together. Again, a Hi-Reseditor makes creating the shape tables a trivial exercise.SHLOAD.A command to load a shape table from tape.SOFT SWITCH. A memory location which controls something. You mayset and interchange output modes using soft switches.TWO'S COMPLEMENT. A binary number formed from another by interchangingones and zeros and then adding one.USR. A BASIC command which passes a value to a machine languageroutine. The starting address for the routine must be placed in locations$