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