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