{TAIL ~ system status} holding means for holding {HEAD ~ information} indicating the status of the computer system 
{ TAIL ~ system status } holding means for holding { HEAD ~ information } indicating the status of the computer system
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH