Yet another aspect of the present invention comprises orienting {HEAD ~ the symbol} by identifying {TAIL ~ at least a portion} of the data cell border 
by identifying
Yet another aspect of the present invention comprises orienting { HEAD ~ the symbol } by identifying { TAIL ~ at least a portion } of the data cell border
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH