Thank you very much people for explanation of kind of forbidden scalping!
Now I understand what exactly they forbid.
Before that all my trading life I didn't understand what's so bad if, just for example I use Woodie's CCI on 5 min to get my 3-5 or so pips from a trade.
Now I see the reasons for limiting a volume which would affect hedging system, but in other aspect that is not scalping actually that is really more like "insider trading".
Now I understand what exactly they forbid.

Before that all my trading life I didn't understand what's so bad if, just for example I use Woodie's CCI on 5 min to get my 3-5 or so pips from a trade.
Now I see the reasons for limiting a volume which would affect hedging system, but in other aspect that is not scalping actually that is really more like "insider trading".