It is also possible to change {HEAD ~ the authentication schemes} associated with {TAIL ~ a request} by simply changing the protect string 
associated with
It is also possible to change { HEAD ~ the authentication schemes } associated with { TAIL ~ a request } by simply changing the protect string
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH