The control voltage is selected in such a manner that it is dependent on the size of return stroke in {HEAD ~ order} to compensate {TAIL ~ the alteration} in the return stroke 
to compensate
The control voltage is selected in such a manner that it is dependent on the size of return stroke in { HEAD ~ order } to compensate { TAIL ~ the alteration } in the return stroke
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH