Glad you asked! Shopping Cart Designer Pro is used to create a custom theme for a Shopping Cart Creator store. This could mean making a few tweaks to a preexisting design, or using one of the blank themes to make something totally unique.
Features include the ability to change backgrounds, text and link properties, colors, borders, margins and padding.
However, there are some things you cannot do. All of your shop content, including text, product and category details, and the order in which things appear can only be edited in Shopping Cart Creator. The text and products in Shopping Cart Designer Pro are purely placeholders that allow you to see how your theme design looks in the context of a fully populated store. Additionally, you cannot modify the structure of the themes, which includes adding, deleting, or changing the position of page elements.
We hope this helps to clarify things!