Different descriptions:

Reading short barcodes as long Expanding UPC-E to 12 Digits Expand UPC-E barcodes to the 12 digit equivalent, UPC-A barcode (Metrologic Fusion).

Scan First barcode of manual labeled: Enter/Exit Configuration Mode.

Scan bottom Left barcode labeled: Expand UPC-E barcodes to the 12 digit equivalent, UPC-A barcode.

Scan the attachment included with the scanner.