Similarly, when {HEAD ~ the program} running in {TAIL ~ foreground} is performing process control functions by manipulating data acquired or generated by the background process and returning control information to the background process, the synchronization which this aspect of the invention makes possible insures that the control information being returned to the background process is always based on up to date acquired information 
running in
Similarly , when { HEAD ~ the program } running in { TAIL ~ foreground } is performing process control functions by manipulating data acquired or generated by the background process and returning control information to the background process , the synchronization which this aspect of the invention makes possible insures that the control information being returned to the background process is always based on up to date acquired information
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH