Product Comparison Help

I have created a product in WHMCS and I selected a 'comparison' template during the creation of the product. I also have 3 options for this product, but now how do I get this template and all the details of the product to display on the site on the front end?

I did find the information to get some of the information on here http://docs.whmcs.com/Data_Feeds#Product_Pricing but this doesn't tell me how to get the comparison template to display as well?

Please could someone advise.

Thank you