What does "pending orders" mean?

In Pending orders you will find a list of all orders placed, both those not yet confirmed by the bookseller and those confirmed pending shipment. For each order you can view the details (list of books ordered, payment method, order status, booksellers selling, total order).
ThroughPending orders you can, only until the bookstore has confirmed the availability of the item, to remove one or more items from the order by clicking on the link "remove".
Once the bookstore has confirmed the availability of the item, it will no longer be possible to cancel the order without exercising the right of withdrawal.