A UPC-E barcode can be augmented with a two-
digit or five-digit add-on code to form a new one. In
the examples below, the part surrounded by blue
dotted line is a UPC-E barcode while the part circled
by red dotted line is add-on code.
Enable 2-Digit Add-On Code
W106910
*Disable 2-Digit-Add-On Code
W106900
Enable 5-Digit Add-On Code
W206920
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