Doesn't depth mean what it is supposed to literally mean ? As I understand it, category depth means the hierarchical subcategory levels that a category can have. In other words, each category can have subcategory_level1 subcategories, each subcategory_level1 subcategory has subcategory_level2 subcategories, each subcategory_level2 subcategory has subcategory_level3 subcategories and continues similarly to subcategory_levelx subcategories, which finally contain the products. I understand that in this case the cart becomes more complicated but at least the user has the option to implement this setup, i.e. he/she can select how many levels is the depth of the subcategories. Is this the case with zen cart, or is it that category depth means just the number of categories that can be created...? (i.e. ony 3 levels depts>> categories, product types, products)