The HTML document handling portion is operative to communicate through a proxy server , with {HEAD ~ a home HTTP server} in the intranet or the foreign servers in {TAIL ~ the wide area network} 
The HTML document handling portion is operative to communicate through a proxy server , with { HEAD ~ a home HTTP server } in the intranet or the foreign servers in { TAIL ~ the wide area network }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL