The tool can categorize and cluster {HEAD ~ content} by feature, to assemble a library of scenes or scene clusters according to {TAIL ~ user selected criteria} 
The tool can categorize and cluster { HEAD ~ content } by feature , to assemble a library of scenes or scene clusters according to { TAIL ~ user selected criteria }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL