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>And David, I thought that the whole premise of both Windows and Objects *IS* the passing of messages to/fro. I cannot see how this would "break" encapsulation.

passsing msgs - yes but not calling direct methods

other object shouldn't know or care about the internal workings of other objects
What we implemented here is to add a single method (called DISPATCH) to all objects and have objects pass msgs to each other using this method
this way if some object does not know how to handle a message it gets it just doesn't do anything etc.

Arnon