Open windows are generated when {TAIL ~ the super agent} is not accessing {HEAD ~ the shared synchronous memory} 
Open windows are generated when { TAIL ~ the super agent } is not accessing { HEAD ~ the shared synchronous memory }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD