Well. Now I understand. On this russian alpari forum the author is talking with our Alex.Piech.FinGeR.
The author does not speak english and Alex.Piech.FinGeR does not understand russian language. They created this indicator all together and one russian was trying to be an interpreter. Very funny program development when nobody understands each other: only mql4 language.

Thus author's idea was the following (this russian translated - not me):
"My working currency pair is EURUSD. If there is doubts, but I want to be in the market, I work with franc (the price of pips is less). Also I look at pound, but for pound this method isn't very useful - it is very fast, grow and grow... RSI couldn't be in it's zones on big timeframes. I use it only to confirm real movement of euro. On the true movement, euro and gbp go step in step, even cancdles could be drawn equally. I have never used cross rates.

Stops... It depends on situation, targets and locations of levels R\S... In any case I put stop... First, as a rule, big (for intraday), technical - upto 55 pips. Such a stop gives me some time to think on situation, if enter was wrong and maybe the overturn is necessary, not waiting a loss. Usually, an impuls on M15 very selcom can be more than 50 pips - that protects the order from early closing, especially if enter was on the very extremum.

This common rules are for pipsing.
Levels of RSI (21 and 76) - are necessary minimum, it is better when RSI (3) on M15 touches 10 and 90 levels..."