In {HEAD ~ other words}, {TAIL ~ the cutter} 24 is adjusted in proportion to the error in a single step 
In { HEAD ~ other words } , { TAIL ~ the cutter } 24 is adjusted in proportion to the error in a single step
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH