The indicator is drawn as a colored cloud between the lines of a slow digital filter and the price.
This indicator was first implemented in MQL4 and published in CodeBase at mql4.com on 10.09.2007.
Figure 1. The Ticker_SATL indicator
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/2337
An oscillator from an averaged difference between the FATL digital filter and the Close price.DigitMacd
A colored cloud formed by the lines of the FATL and SATL digital filters.