runtime divided by pof

Code:

If $runtime > $POF
	$strokes = $strokes + 2^($run_time / $POF)
EndIf


so a POF of 20 secs gives:

running for 10 secs = 2^(10/20) = 0
running for 20 secs = 2^(20/20) = 2
running for 40 secs = 2^(40/20) = 2*2 = 4
running for 60 secs = 2^(60/20) = 2*2*2 = 8
etc...