A connector element may be attached in {HEAD ~ the usual manner} to {TAIL ~ an adapter rod} projecting from a block element 
to
A connector element may be attached in { HEAD ~ the usual manner } to { TAIL ~ an adapter rod } projecting from a block element
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH