Symbols in movie ratings refer to the icons used to indicate the age appropriateness of a film. The most common symbol is the star rating system, which is used by many countries and organizations to rate films based on their content. The number of STARS given to a film can range from one to five, with five STARS indicating that the film is suitable for all ages. Other symbols used in movie ratings include letters, such as G, PG, PG-13, R, and NC-17, which indicate the level of violence, sexual content, and language in the film.