{TAIL ~ A QClose function} closes the associated file descriptor created via {HEAD ~ a QSocket function} and returns a zero on success, or −1 if an error occurred 
{ TAIL ~ A QClose function } closes the associated file descriptor created via { HEAD ~ a QSocket function } and returns a zero on success , or −1 if an error occurred
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH