{HEAD ~ The results} of the providers processing are sent back to {TAIL ~ the authentication engine}, which then processes the results according to the protect string to determine whether the request has been authenticated 
{ HEAD ~ The results } of the providers processing are sent back to { TAIL ~ the authentication engine } , which then processes the results according to the protect string to determine whether the request has been authenticated
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL REL TAIL 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