The real author:
The indicator draws the lines of day start and its high and low price values.
This indicator was first implemented in MQL4 and published in Code Base at mql4.com on 17.10.2007.
Fig.1 The Paromon indicator
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/1491
The semaphore arrow indicator of trend changeSlope Direction Line
The trend indicator drawn on the basis of a Moving Average