Captioning at the top of the screen
Decoders adopting the new 1993 FCC/EIA specifications can support Roll-up captioning at the top of the screen. All decoders manufactured before July 1993 can only display Roll-up captions at the bottom of the screen. If you have a new decoder or a new TV with a decoder built-in, you might sometimes see captions appear at the top of the screen to avoid conflicts with the graphics (names of people, etc. ) at the bottom of the screen. Of course, the captioner has to make an extremely fast decision to move the captions to the top when necessary. If the captioner does not do that, even with the new decoders you will see the captions covering the graphics at the bottom.