GRIB TrendlineGRIB Trendline show the distance betwen the price and the SAR with the GRIB settings in percentage. It highlight the elasticity of the wave. It's designed to be used with trendlines to spot the bottoms and the tops.
More explanation here :
and here :
note : do not use "selldot" and "buydot", i was testing something and gave up about the idea
