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Object-oriented Programming
Getting Started with Classes, Interfaces, and Objects : Defining classes : Defining state in a class

Defining state in a class

Data can exist in the following forms within a class:
*Data members of the class
*Properties of a class
*ABL widgets, streams, and work tables that are referenced by class members
*Local variables of a method within the class
* Data members and properties
* Class-scoped handle-based objects
* Local variables and other data elements of methods