{TAIL ~ The diagnostic tool} then tests the connectivity from the computer to {HEAD ~ a selected network entity}, and the status of the connectivity is graphically displayed 
{ TAIL ~ The diagnostic tool } then tests the connectivity from the computer to { HEAD ~ a selected network entity } , and the status of the connectivity is graphically displayed
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH