winclass ExistingClass : ExistingClass... attribute_definitions
Each attribute definition must begin and end on its own line. When you define a new attribute, you usually need to define two new methods (steps 2 and 3 above) if none of the built-in methods suffice.
Silk Test Classic allows you to add, delete, or edit the existing functionality of a class; this applies to both functions and variables of a class. However, we recommend that you do not override a function or a variable by declaring a function or variable of that same name. Furthermore, you should never override a variable that has a tag associated with it. You cannot have two variables with the same name in the same level of an object. If you do so, Silk Test Classic will display a compile error.