A program is generated that invokes each peripheral function and each execution function in {TAIL ~ an order} determined from the interconnections between {HEAD ~ the blocks} 
A program is generated that invokes each peripheral function and each execution function in { TAIL ~ an order } determined from the interconnections between { HEAD ~ the blocks }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD