345 / | HD | COMPUTER GRAPHICS PROCESSING, OPERATOR INTERFACE PROCESSING, AND SELECTIVE VISUAL DISPLAY SYSTEMS |
112 | DF | DISPLAY ATTRIBUTE CONTROLLER {11} |
121 | DF | .~ Image movement or position control (e.g., panning) {2} |
123 | DF | .~.~ Scrolling {2} |
124 | .~.~.~ Alphanumeric |