Hi Ahmad - thank you for explanation. I purchased the indicator yesterday (after using the trial) and I must say it is the most usuful indicator I've had so far!

I'm interested in the supply / demand trading methods (as described by Sam Seiden, Alfonso Moreno...) and planned to develop my own indicator but then I found your indicator and I'm quite happy now.

However, for the future, I'd like to develop it further or, maybe, use slightly different logic etc. I understand you do it for living and so you don't publish your source code. But still, would there be any way of getting/buying either the code or description of the algorithm for my own use? I don't plan to resell it, publish or whatever else, I only want to make some customizations for my own purpose. I could share the code back if you were interested.

Thanks for information

Hi - what does the "period" attribute mean? The documentation states that "higher periods mean stronger zones" but what exactly does the period represent? Thanks