The High/Low supertrend uses an ATR produced from the highest and lowest points within the ATR lookback range, instead of from current highs and lows. This makes it less susceptible to false breakout attempts.
In the settings, you can choose whether you want the supertrend to calculate from the highest highs and lowest lows within the period, or the maxima of the opens and closes.
USAGE: I recommend using this supertrend as the arming mechanism to the buy or sell, instead of the trigger itself. This is because in ranging markets the supertrend will flip on the current high or current low.