Simple trend indicator displayed in the form of NRTR. Its use is similar to Parabolic Sar.
This indicator was first implemented in MQL4 and published in Code Base at mql4.com 10.05.2012 (in Russian).
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/986
Same RSI and Dem but more sensitive one.i-BB-Width
Bollinger Bands Width. One of its application methods was described in FOREX Magazine №123 (July 2006) on page 47.