The indicator is a variation of Bollinger Bands and Envelopes, based on two moving averages calculated by the Linear Regression method (LSMA Linear regression MA).
It has one input parameter:

MetaQuotes Ltd tarafından Rusçadan çevrilmiştir.
Orijinal kod: https://www.mql5.com/ru/code/20261
LR_MACD
MACD based on the Linear regression MA.
ProfLine
The script draws horizontal lines representing BUY (blue) and SELL (red) orders.
SHL_MA_Band
A trend indicator: Smoothed High/Low Linear regression band.
Cumulative_Volume
A volume indicator with different types of data representation.