CGC’s Receiving Department opens the newly arrived packages each morning and immediately verifies that the number of books in each package matches the number shown on the invoice. Once this is done, a more detailed comparison is made to ensure that their invoice descriptions correspond to the actual comics. This information is entered into a computer, and the comics will henceforth be traceable at all stages of the grading process by their invoice number and their line number within that invoice. Each book is placed within protective mylar that has affixed to it a label bearing the invoice and line item numbers, information which is duplicated on the label in a bar-coded inscription for quick reading by the computer. Before any grading is performed, each book is examined by a CGC restoration detection professional. If any form of restoration work is detected, this information is entered into the computer so that it will be available to the grading team.