Each module having a one to one correspondence with a bit in a data array and comprising X columns and {HEAD ~ Y rows} of {TAIL ~ pixels} 
of
Each module having a one to one correspondence with a bit in a data array and comprising X columns and { HEAD ~ Y rows } of { TAIL ~ pixels }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL