Glossary
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Abstarct class
A class that has no instances. An abstract class is written with the expectation that its concrete subclass will add to its structure and behavior, typically by implementing its abstract operations

Abstract Operations
An operation that is declared but not implemented by an abstract class. In C++, an abstract operations is declared as a pure virtual member function.

Actor
An object that can have both operate upon other objects and be operated upon by other opjects. An agent is usaly created to do some work on behlf of an actor or another actor

Base Clas
The most general

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Author: Deniz Zubair Choudhury
Last Update: March 1999