Catagory
Links

Category Link
These are the links associated with a particular
category.  You can use these links to reference from pages outside the site to
the actual shopping cart. 

Category Links Include Code for
.shtml pages

This is the SHTML code that is associated with
items in a particular category.  If you were displaying your items on pages
outside the cart and you coudl use this code. The advantage to using SHTML code
is that it automatically updates your items and categories on your webpage as
you update those items/categories in your shopping cart. This saves you time in
having to update information in 2 different places.