receiving {TAIL ~ a request} to write the predetermined data to a page to which {HEAD ~ data} has been written 
receiving { TAIL ~ a request } to write the predetermined data to a page to which { HEAD ~ data } has been written
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH