| 345 / | HD | COMPUTER GRAPHICS PROCESSING, OPERATOR INTERFACE PROCESSING, AND SELECTIVE VISUAL DISPLAY SYSTEMS |
| 326 | DF | OPERATOR INTERFACE {6} |
| 329 | DF | .~ For plural users or sites {2} |
| 331 | DF | .~.~ Computer supported cooperative work {1} |
| 332 | ![]() | .~.~.~ Group window |