I wonder if what he is trying to do is to keep taking the command for as long as the key is being pressed, but stop when the key is released. This is found, for instance, in old classic games like Ultima 3, where you move in a certain direction for as long as you hold the key down, and stop when you release the key. Makes it easier than, say, having to press the key, release, press, release, etc, ad nauseum.