Narrative film, fictional film or fiction film is a film that tells a fictional or fictionalized story, event or narrative. In this style of film, believable narratives and characters help convince the audience that the unfolding fiction is real. Lighting and camera movement, among other cinematic elements, have become increasingly important in these films. Great detail goes into the screenplays of narratives, as these films rarely deviate from the predetermined behaviours and lines of the classical style of screenplay writing to maintain a sense of realism. Actors must deliver dialogue and action in a believable way, so as to persuade the audience that the film is real life.