If however the users {TAIL ~ input address} corresponds to an address of a foreign server, the proxy server is operative to communicate through the wide area network with {HEAD ~ the foreign server} at the customers home institution 
If however the users { TAIL ~ input address } corresponds to an address of a foreign server , the proxy server is operative to communicate through the wide area network with { HEAD ~ the foreign server } at the customers home institution
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH OTH