
Closed captioning (or abbreviated: CC) and subtitling are both processes of displaying text on a television, video screen, or other visual display to provide additional or interpretive information. Both are essentially the same and typically used as a transcription of the audio portion of a program as it occurs (either verbatim or in edited form),...
Found on
http://en.wikipedia.org/wiki/Closed_captioning

Text stream included in broadcast signal that provides narrative description of dialogue, action, so
Found on
https://www.encyclo.co.uk/local/22375
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