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KB:
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Formal Language:
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   Trackball
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| appearance as argument number 1 |
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| (subclass Trackball ComputerInputDevice) | ComputerInput.kif 622-622 | Trackball is a subclass of computer input device |
| (documentation Trackball EnglishLanguage "A type of ComputerInputDevice with a ball that can be rolled to control a cursor in the X and Y directions. A Trackball may or may not have an attached button for clicking.") | ComputerInput.kif 624-627 | Trackball is a subclass of computer input device |
| appearance as argument number 2 |
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| (disjoint Joystick Trackball) | ComputerInput.kif 629-629 | Joystick is disjoint from trackball |
| (termFormat EnglishLanguage Trackball "trackball") | domainEnglishFormat.kif 65620-65620 | Joystick is disjoint from trackball |
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