This indicator calculates the classic historical volatility of a financial asset.
It was first implemented in MQL4 and published in Code Base at mql4.com 23.09.2010.
Fig.1 The HistVolatility Indicator
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/1061
Implementation of the option to change the drawing mode, as exemplified by the CCI indicator.Trade_Time
This indicator draws a period of operation that specifies trade start time and trade stop time.