Hi,
Been a long time since seeing a post here. This was developed only to add the products description to emails, invoices and packing slips. It was made to replace the model number as many carts sell items that use descriptions of usually unique items that do not have model numbers. A for instance is....I sell collector stamps. There are no model numbers for those. But in my descriptions I note things like flaws and conditions of the stamps. So I developed this "mod" to add them to emails etc. It still works great with the newest Zencart by the way.. As to adding URL's unless maybe the URL is written into the items description this will not work.
An idea may be to write the html code in your descriptions and thus when it produces an email the link would be created. Hope that helps you!
Regards.
J