Film captioning services  provide visual assistance for the actor's dialogue, notations for music, sound effects, and other background noises, which is especially useful when these aspects are critical to the on-screen action. A caption is an essential component of modern filmmaking since it assists those with hearing problems and speakers of a foreign language. The ADA Title III Final Rule, which mandates movie theatres and cinemas to provide closed captioning, recognises the role of captioning in promoting diversity. Most people are familiar with film captioning services online, a means of revealing captioned text only when it is required. CC is also a legal requirement in the United States for most pre-recorded television programmes. The script for open captions and closed captions is the same.