This library was created for testing the portfolio of expert advisors. After implantating into the EA, it flushes with the specified periodicity (day, month, quarter, year) the profit for the period and the balance at the end of the period. After that, this information, obtained from the different EAs, can be processed in the excel.
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/8051