Documents are available at the different parts of the system depending on relaction and intend of the usage. With that feature of GrandNode you may add invoice, which will be shown at the customer My Account section as well as will be listed at the administrator dashboard order details page. That is not the end of possibilities in usage. Document may be a warranty card or manual, which will be added to the product, not only to the order.
Get idea of the usage by uing this chapter.