Similarly, when the program running in foreground is performing {HEAD ~ process control functions} by manipulating data acquired or generated by the background process and returning {TAIL ~ 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 
by returning
Similarly , when the program running in foreground is performing { HEAD ~ process control functions } by manipulating data acquired or generated by the background process and returning { TAIL ~ 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 OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL 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