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