occurrences are not simply footage of the occurrence, but rather hired actors portraying an adjusted, often more dramatic, retelling of the occurrence (such as 21 by Robert Luketic). Unlike literary fiction, which is typically based on characters, situations and events that are entirely imaginary/fictional/hypothetical, cinema always has a real referent, called the "pro-filmic", which encompasses everything existing and done in front of the camera. Since the emergence of classical Hollywood style in the early 20th century, during which films were selected to be made based on the popularity of the genre, stars, producers, and directors involved, narrative, usually in the form of the feature film, has held dominance in commercial cinema and has become popularly synonymous with "the movies." Classical, invisible film making (what is often called realist fiction) is central to this popular definition. This key element of this invisible film making lies in continuity editing. See also Cinematography Film genre Non-narrative film Drama, which deals mainly with film. References David Bordwell, Mark Dherrick Cuevas, and Kristin Thompson. 1997. Film Art: An Introduction. Fifth ed. New York: The McGraw-Hill Companies. . Film genres Film and video terminology Cinematography Filmmaking