I'm trying to get myself to use sticky keys (to prevent RSI), but I often find I've pressed Ctrl and then changed my mind, and I'm not sure if hitting e.g. q will insert a q or quit the program … is there a way to get an onscreen indicator for whether a key is "stuck"?
Alternatively, is there a way to get sirupy keys, ie. keys that stick when you hit them but then let go if there's no more keys within N seconds?