{HEAD ~ The characters} and graphics from a teletext/data transmission decoder are synthetically combined with {TAIL ~ the portions} of the images of the video signals for blank zones of the screen by the synthesizing circuit 
are synthetically combined with
{ HEAD ~ The characters } and graphics from a teletext / data transmission decoder are synthetically combined with { TAIL ~ the portions } of the images of the video signals for blank zones of the screen by the synthesizing circuit
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH