This indicator was implemented in MQL4 and published in CodeBase at mql4.com 14.02.2008.
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/776
The Acceleration/Deceleration Indicator (AC) measures acceleration and deceleration of the current driving force.Average Directional Movement Index (ADX)
The Average Directional Movement Index Indicator (ADX) helps to determine if there is a price trend.