This functionality is supported only if you are using the Classic Agent.
Classes may allow different styles of instantiation. Style-bits determine the styles that can be applied to an object. For example, a PushButton, CheckBox, and RadioButton are all variants of the native Windows Button class. They are all the same class, but each has different style-bit to determine the specific look and behavior of the button.
You can map not only an entire class, but also specific ‘styles’ of one class to another known class.