Who said that GRAIL CANNOT BECOME PROFITABLE? - one of the authors of an article about grails. I can tell you the opposite. Lucky is also a grail, but after 3 months of working over it, it started to bring profit without using the intrabar trading. You need proofs? See reports from a demo and a real account.
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/7464
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Automated volume calculation for the preset risk factor, and order(s) opening.