...BHM can be seen as the binary equivalent of XML. It allows flexible hierarchies of any type of data, in a platform-independent way. BHM however trades XML's readability for compactness and speed of processing.
An application I designed with animated fish swimming in a tank. The fish swim with in the window boundaries. If they reach/touch the wall they turn another direction. User can specify the number of fish and the speed. The background image can be swa