Hi Can some one explain what is this page exactly?
This page helps you compute margins for the F&O positions you take. Whenever you enter into an F&O position, margins get charged for the position you’ve taken. Normally it’s done on a portfolio basis using the SPAN (http://www.investopedia.com/terms/s/spanmargin.asp) method, this page has simplified the process by letting you replicate your position through which you can determine your F&O margins.