The purpose of this contribution is to allow you to cross sell matching or coordinating products to customers for almost any use such as completing an outfit, other books in a series, color matching items, etc.... This is done by simply adding product SKUs (product ids) to the product page in admin in the following fashion SKU, SKU, SKU, etc. SUPPORT FORUM: Then on the catalog product page 3 of these SKUs are randomly selected to display as "matching" cross-sell items if they are in stock, allowing you to increase your cross sells and not have to micro-manage them. Can be easily added to even the most modified of stores.