The signal appears in the case of the breakthrough of the High(Low) of the previous bar with bull (bear) direction.
The signal should be interpreted according the current situation.
In some cases it can be interpreted as a reverse signal, for example the red signal can be considered as a good buy opportunity when the trend is bullish.
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/69
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.