In {TAIL ~ another aspect} of the present invention, a method of reading {HEAD ~ a multi dimensional matrix symbol} is provided 
In { TAIL ~ another aspect } of the present invention , a method of reading { HEAD ~ a multi dimensional matrix symbol } is provided
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH