GeometricObect 		void Draw(); 
Two_D_Object 
Rectangle 
----------------

GeometricObect g;
Two_D_Object t;
Rectangle r;


g.Draw();		// 
t.Draw();		// 
r.Draw();		// 

























1) Look at the calling OBJECT (left of the dot-operator)
2) What is the TYPE of the calling object?
3) That's the class I go to, to look for the function
4) If it's there, that's the one.
5) If not, go to the parent.  Rinse and repeat.