I seem to recall someone disclosed this, but that memory cell was replaced by another brewsky or something. I think this should be disclosed in the Prospectus, but I have not found it. I think there are at least two primary algorithms. 1) portion of short Front Month to short Back Month VX Futures, as a function of time remaining to the expiration of the Front month. 2) Some form of size adjustment. If this is in the prospectus, can someone provide the page# please?