Presumably this can be expanded to support keypad input, but is there some differing method for that, as opposed to
echo "send NNN" > /proc/keypad? In the script he uses 104 and 109 for forward and back navigation, respectively. Found some reference keys
here, but with the keypad open on my K4NT using for example
echo "send 16" > /proc/keypad does not yield a Q input into it. Is there some specific precursory command to send input to the keypad?