Basic difference of the indicator from the standard B. Williams' fractals are as follows:
This indicator was first implemented in MQL4 and published in Code Base at mql4.com 17.08.2008.
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/732
Non-linear regression with interpolation of a price chart future values.ColorXWPR
Enhanced version of Larry Williams' Percent Range.