| No TPTP formula. May not be expressible in strict first order. | ComputerInput.kif 1254-1254 | KeyHoldDown 是 KeyboardAction 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | ComputerInput.kif 1265-1265 | ShiftKeyHoldDown 是 KeyHoldDown 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | ComputerInput.kif 1285-1285 | ControlKeyHoldDown 是 KeyHoldDown 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | ComputerInput.kif 1306-1306 | AltKeyHoldDown 是 KeyHoldDown 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | ComputerInput.kif 1329-1329 | FunctionKeyHoldDown 是 KeyHoldDown 的 subclass |
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