blocks of text more than one sentence of text CAPTCHA initialism for "Completely Automated Public Turing test to tell Computers and Humans
      Apart" Note 1 CAPTCHA tests often involve asking the user to type in text that is displayed in an
      obscured image or audio file. Note 2 A Turing test is any system of tests designed to differentiate a human from a computer.
      It is named after famed computer scientist Alan Turing. The term was coined by researchers
      at Carnegie Mellon University. captions synchronized visual and/or text alternative for both speech and non-speech audio information needed to understand the media content Note 1 Captions are similar to dialogue-only subtitles except captions convey not only the
      content of spoken dialogue, but also equivalents for non-dialogue audio information
      needed to understand the program content, including sound effects, music, laughter,
      speaker identification and location. Note 2 Closed Captions are equivalents that can be turned on and off with some players.