Accordingly, as the image file is displayed to the user at the user computer, the actions taken by the user can be transmitted to the gateway server over {HEAD ~ a return channel} on {TAIL ~ the broadcast device} 
on
Accordingly , as the image file is displayed to the user at the user computer , the actions taken by the user can be transmitted to the gateway server over { HEAD ~ a return channel } on { TAIL ~ the broadcast device }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL