Maybe, I don't know your keyboard layout but there should be "Delete" written on it.
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What do you mean? It doesn't really matter which key you map things to if it's stated somewhere in a list with the other controls. I chose backspace and delete for reset and restart because they are far away from both the A and D and left and right arrow keys which are used for movement so players won't accidentally press them while playing. This might have been a bit of an overkill but still... if people paid for their whole keyboard, why shouldn't they use their whole keyboard? :D