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