The border is preferably set up in a known array of cells to provide the code reading software with an example of each feature to recalibrate the software algorithm so that the correct data will be {HEAD ~ output} for {TAIL ~ each feature} in the matrix 
for
The border is preferably set up in a known array of cells to provide the code reading software with an example of each feature to recalibrate the software algorithm so that the correct data will be { HEAD ~ output } for { TAIL ~ each feature } in the matrix
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH