The above diagram illustrates the order in which the DVI lab data packet is created. Items at the top of the diagram are created prior to items at the bottom of the diagram. It is important to keep this hierarchy in mind when utilizing the external lab code redirecting utility. For example: If you are using the Frame Style code to create an entry in the Lens Edge field, you must be aware that later when the Lens Edge value is determined, it will override anything created at the time the Frame Style code was evaluated. Currently, none of these override problems have come up.