FIG 3 illustrates as an example a message sequence between a client 110, which is a browser, and a server 300; {HEAD ~ this message sequence} relates to {TAIL ~ the third preferred embodiment} of the invention 
relates to
FIG 3 illustrates as an example a message sequence between a client 110 , which is a browser , and a server 300 ; { HEAD ~ this message sequence } relates to { TAIL ~ the third preferred embodiment } of the invention
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH