Uses the basic CODE 39 barcoding system, based on limited notes that I had in my notebook (from an old technology book). Keep in mind, however, the Wikipedia file on the topic uses the start/stop code in the place of the asterisk, so I did the same. Another note, for Word users, is that the ellipsis symbol is just 3 "full-stop" barcodes in a row. Includes alphanumeric barcodes (lowercase is the same as capitals to avoid the shift lock). ANY MODIFICATIONS WILL COMPROMISE FUNCTIONALITY WITH BARCODE SCANNERS. SURROUND THE TEXT BY ASTERISKS FOR USABILITY - THE ASTERISK IS THE START/STOP BARCODE. Example: *TEXTHERE*