Classes
 ClassDescription
 EventDescriptor In broadcast implementations of event-driven environments such as Flex and Flash, an event is fully described through its event source (or the object from which this event originates), and the name which distinguishes the event from the other events originating from the same source.
 EventRethrower EventRethrower provide us with a simple mechanism to intercept a certain event and to rethrow it, thus dispatching the same event with a different source for it (the target-property of the event will be the specified context passed as an argument to the EventRethrower-constructor).
 Listener Listener provide us with a mechanism of binding an event to a consumer function.