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Flash Player 6.
someListener.onKeyUp
Listener; notified when a key is released. To use onKeyUp you must create a listener object. You can then define a function for onKeyUp and use addListener() to register the listener with the Key object, as in the following:
someListener = new Object();
someListener.onKeyUp = function () { ... };
Key.addListener(someListener);
Listeners enable different pieces of code to cooperate because multiple listeners can receive notification about a single event.
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