Translates the audio portion of a video presentation by way of subtitles, or captions, which usually appear on the bottom of the screen. Captioning may be closed or open. Closed captions can only be seen on a television screen that is equipped with a device called a closed caption decoder. Open captions are “burned on” a video and appear whenever the video is shown. Captioning makes television programs, films and other visual media with sound accessible to persons who are deaf or hard of hearing.