{HEAD ~ This image data set} could be provided to {TAIL ~ one or more display units}, whereby each visual aid may be presented on the screen of each display unit 
provided to
{ HEAD ~ This image data set } could be provided to { TAIL ~ one or more display units } , whereby each visual aid may be presented on the screen of each display unit
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH