Hi John
It’s a Relational page_link.
I set these up, or am hoping to, so can add links to other products.
I have noticed, though, that i am unable to set up a single link, not just multiple. I did think it was working, but just noticed it isn’t and just linking to itself, e.g. look at the Read this link under add to cart button here http://www.sorce.co/jarbon/product/kbn-minis-4ply/.
I am adding the code to this theme file content-single-product.php