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} |
340 | DF | .~.~ Window {4} |
343 | DF | .~.~.~ Window differentiation {1} |
344 | DF | .~.~.~.~ Priority {1} |
345 | .~.~.~.~.~ Viewing lower priority window |