Here are entered works on the depiction of advertising in motion pictures. Works about still or moving-image advertisements displayed on motion picture theater screens, usually before the feature presentation, are entered under [Theater commercials (Motion pictures).] Works about the advertising of motion pictures are entered under [Advertising--Motion pictures.] Works about films that promote or advertise a product, industry, service, organization, etc. are entered under [Promotional films,] subdivided by appropriate geographic, topical, and/or form subdivisions.