In {TAIL ~ the UPC symbology}, a character is defined as having {HEAD ~ two bars} 16 and two spaces 18 of varying widths 
In { TAIL ~ the UPC symbology } , a character is defined as having { HEAD ~ two bars } 16 and two spaces 18 of varying widths
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH