(subclass Blackboard DataDisplayDevice) | Media.kif 1085-1085 | Blackboard is a subclass of data display device |
(subclass Blackboard DataStorageDevice) | Media.kif 1086-1086 | Blackboard is a subclass of data storage device |
(subclass Blackboard DisplayArtifact) | Media.kif 1087-1087 | Blackboard is a subclass of display artifact |