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