Subtitles are textual versions of the ialog in films and television programs, usually displayed at the bottom of the screen. They can either be a form of written translation of a dialog in a foreign language, or a written rendering of the dialog in the same language—with or without added information intended to help viewers who are deaf and hard-of-hearing to follow the dialog. Television teletext subtitles, which are hidden unless requested by the viewer from a menu or by selecting the relevant teletext page (e.g. p888), always carry additional sound representations for deaf and hard of hearing viewers. Teletext subtitle language follows the original audio, except in multi-lingual countries where the broadcaster may provide subtitles in additional languages on other teletext pages.