This indicator shows you the highs and lows of the previous "X" amount of bars. This is an objective way of identifying previous price swings. For example, an input of "10" will show you the Swing High (SH) of the previous 10 bars and the Swing Low (SL) of the previous 10 bars. The higher the number, the higher number of bars included in the calculation. Therefore, the higher the number, the less "noise" taken into consideration. This means that higher input values will not take into consideration smaller retracements. Lower input values will take into account small retracements within larger movements.