Tutorial: Getting Started with Protege-Frames
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Slots and inheritance
We do not have to assign the name slot to every class where we want it to appear. Any subclass of a class automatically inherits all the slots of the superclass. For example, if you click on the News_Service class, you can see that:

a) the name slot has already been assigned to this class through inheritance
b) the slot icon is different than it was for Author, i.e., the " inherited slot" icon shows that the slot has been inherited



Note: In the Protege-Frames menu bar, click Help | Icons to see a list of all the icons in the Protege User Interface, along with textual descriptions of what the icons mean.

Classes with more than one superclass inherit the slots from both classes. For example, if you click on the Editor class, you can see that it has inherited the name slot from Author, and the salary slot from Employee. This multiple inheritance is an essential part of Protege-Frames.