Closed captions allow deaf and hard of hearing viewers to have a complete understanding of the content they are watching. Unlike subtitles, they display all audible information in the original work, including dialog, non-verbal vocalization such as laughter, crying, etc., as well as descriptions of sound effects and music. Often referred to as CC, closed captions are an accessibility solution rather than a localization service. According to the World Health Organization, there are 466 million people worldwide with a hearing impairment, including 36 million children. As a matter of equity and fairness, closed captions are increasingly a legal requirement for broadcasters and online streaming platforms so that this important audience is properly served.