NSE:SBICARD π To Trade on This Chart, You Should Have Reversal Trading Knowledge. As Harmonic is One Of The Best Reversal Trading Strategy, But Always Remember That Harmonic Patterns Also Can Fail (there is no holly grail In Stock Market). That's Why One Should Must Have Knowledge Of Reversal Trading To Trade On Harmonic Patterns. π That Dash Line Is Called PRZ, From That Dash Line To that Horizontal Simple Line Area Is Whole PRZ(Price Reversal Zone).