The document discusses the codes and conventions used in film posters to advertise and promote movies. It explains that film posters use imagery, color schemes, icons and other visual elements to immediately communicate the genre of the film and give audiences a sense of its narrative. Key visual elements often featured on posters include prominent images of characters, symbols that represent the genre or story, and the inclusion of the film's title, cast, director and other creative talents. The goal is to attract target audiences and generate hype around a film using visuals that stand out on billboards, in theaters and online.