{HEAD ~ A bit pattern} represented by {TAIL ~ the dot matrix} is detected and written to generate a byte pattern 
{ HEAD ~ A bit pattern } represented by { TAIL ~ the dot matrix } is detected and written to generate a byte pattern
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH