The Motion Picture Association film rating system is used in the United States and its territories to rate a motion picture's suitability for certain audiences based on its content. The system and the ratings applied to individual motion pictures are the responsibility of the Motion Picture Association (MPA), previously known as the Motion Picture Association of America (MPAA) from 1945 to 2019. The MPA rating system is a voluntary scheme that is not enforced by law; films can be exhibited without a rating, although most theaters refuse to exhibit non-rated or NC-17 rated films. Non-members of the MPA may also submit films for rating. Other media, such as television programs, music and video games, are rated by other entities such as the TV Parental Guidelines, the RIAA and the ESRB, respectively. Introduced in 1968, following the Hays Code of the classical Hollywood cinema era, the MPA rating system is one of various motion picture rating systems that are used to help parents decide what films are appropriate for their children. It is administered by the Classification & Ratings Administration (CARA), an independent division of the MPA. Ratings MPA film ratings The MPA film ratings are as follows: In 2013, the MPA ratings were visually redesigned, with the rating displayed on a left panel and the name of the rating shown above it. A larger panel on the right provides a more detailed description of the film's content and an explanation of the rating level is placed on a horizontal bar at the bottom of the rating. Content descriptors Film ratings often have accompanying brief descriptions of the specifics behind the film's content and why it received a certain rating. They are displayed in trailers, posters, and on the backside of home video releases. Film rating content descriptors are exclusively used for films rated from PG to NC-17; they are not used for G-rated films because the content in them is suitable for all audiences even if containing mild objectionable content. Other labels If a film has not been submitted for a rating or is an uncut version of a film that was submitted, the labels Not Rated (NR) or Unrated (UR) are often used. Uncut/extended versions of films that are labeled "Unrated" also contain warnings saying that the uncut version of the film contains content that differs from the theatrical release and might not be suitable for minors. If a