render a first message to said caller that information of a first category will be provided to said caller using said default location unless said {HEAD ~ caller} indicates {TAIL ~ a new location}, 
indicates
render a first message to said caller that information of a first category will be provided to said caller using said default location unless said { HEAD ~ caller } indicates { TAIL ~ a new location } ,
OTH 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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH