Fractional Product Inefficiency Indicator

One of my friends asked me to make this simple indicator in MQL4.

I didn't ask him is it useful but I googled for the keyword "FPI indicator Metatrader". When I found this link "FPI – Fractional Product Inefficiency: The Impeccable Hedge" I decided to code it!

Enjoy yourself! and tell me your comment!

Note: You will find the updated version (11 Oct 2010). Old version is here.

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