| 400 / | HD | TYPEWRITING MACHINES |
| 283 | DF | CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11} |
| 284 | DF | .~ For stopping carriage in tabular position (e.g., column-set positions) {10} |
| 285 | DF | .~.~ In denominational positions {6} |
| 285.1 | DF | .~.~.~ And column-set positions {1} |
| 285.2 | ![]() | .~.~.~.~ Tab-rack stop intercepted by denominational-stop {1} |
| 285.3 | DF | .~.~.~.~.~> Tab stops grouped in stepped fashion |