item of a shopping list consists of a product and additional details
Categories help you organize your shopping lists. Each
a list of products that you can select for a shopping item. Normally
you view shopping lists based on categories.
are identified by a name and belong to a category.
are an optional
feature. If you assign shops to items, you have an additional view of
the items: a shopping list for a shop instead of for the category. You
may assign a shop to an item if you buy the item only in this shop.