The reason behind my question is simple. I want to port it to other ta-platforms (AmiBroker AFL (primarily), Omega EasyLanguage, upcoming fxclub.com Rumus 2, and Java). But myself I have zero-level mql/4 skill. So I'd like someone to explain BTrend locgic in the same manner as I've explained ASCTrend (I've got that knowledge from forex.kbpauk.ru russian forum) a few posts above.