In one embodiment, a fingerprint is generated for {HEAD ~ each document} containing {TAIL ~ markup language code} 
containing
In one embodiment , a fingerprint is generated for { HEAD ~ each document } containing { TAIL ~ markup language code }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL