render {TAIL ~ 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 a new location, 
render { TAIL ~ 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 a new location ,
OTH 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 OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH