I came across this indicator as a part of a template I downloaded. It's quite interesting and powerful in detecting trend changes in lower time frames. I've used on the M15 chart with settings of 0.8 & -0.8, to identify the overbought and oversold levels, for the past 2 weeks and I've been impressed with the improvement I've made in my manual trading. I've stayed in trades based on the direction of this indicator that would would have otherwise been closed due the pullbacks. It's been extremely helpful to me so far. I hope it could of some use to other members.