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