| 345 / | HD | COMPUTER GRAPHICS PROCESSING, OPERATOR INTERFACE PROCESSING, AND SELECTIVE VISUAL DISPLAY SYSTEMS |
| 326 | DF | OPERATOR INTERFACE {6} |
| 339 | DF | .~ On-screen workspace or object {6} |
| 352 | ![]() | .~.~ Menu {2} |
| 353 | DF | .~.~.~> Sub-menu structure |
| 354 | DF | .~.~.~> Using button array |