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