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Mine works. I rarely use it on purpose. More often it gets hit by accident and it takes me a minute to figure out why my arrow keys are not working right.
The one key I would remove from my computer is "Capslk". I cannot touch type and watch the keyboard while typing so if I accidentally touch capslk I may type several words before realising it. Whoever decided to put it right next to "A" should be shot. It should at leastbe somewhere out of the way.