A screenplay or script is a written work by screenwriters for a film or television program. These screenplays can be original works or adaptations from existing pieces of writing. In them, the movement, actions, expression, and dialogues of the characters are also narrated. A play for television is also known as a teleplay.
Format and style 
The format is structured in a way that one page usually equates to one minute of screen time. In a "shooting script", each scene is numbered, and technical direction may be given. In a "spec" or a "draft" in various stages of development, the scenes are not numbered, and technical direction is at a minimum. The standard font for a screenplay is 12 point, 10 pitch Courier Typeface.
The major components are action and dialogue. The "action" is written in the present tense. The "dialogue" are the lines the characters speak. Unique to the screenplay (as opposed to a stage play) is the use of slug lines.
The format consists of three aspects:
- The interplay between typeface/font, line spacing and type area, from which the standard of one page of text per one minute of screen time is derived. In the United States letter size paper and Courier 12 point are mandatory; Europe uniformly uses A4 as the standard paper size format, and has no uniform font requirement.
- The tab settings of the scene elements (dialogue, scenes headings, transitions, parentheticals, etc.), which constitute the screenplay's layout.
- The dialogue must be centered and the names must be capitalized. A script usually begins with "FADE IN:", followed by the first scene description. It might get more specific, e.g. "FADE IN ON AN ECU of Ricky as he explains the divorce to Bob." A script will usually end with "FADE TO BLACK", though there are variables, like "CUT TO BLACK" for abrupt endings.
The style consists of a grammar that is specific to screenplays. This grammar also consists of two aspects:
- A prose that is manifestation-oriented, i.e. focuses largely on what is audible and what is visible on screen. This prose may only supply interpretations and explanation (deviate from the manifestation-oriented prose) if clarity would otherwise be adversely affected.
- Codified notation of certain technical or dramatic elements, such as scene transitions, changes in narrative perspective, sound effects, emphasis of dramatically relevant objects and characters speaking from outside a scene.
Spec screenplay 
A 'spec' or speculative screenplay is a script written to be sold on the open market with no upfront payment, or promise of payment. The content is usually invented solely by the screenwriter, though spec screenplays can also be based on established works, or real people and events.
Commissioned screenplay 
A commissioned screenplay is written by a hired writer. The concept is usually developed long before the screenwriter is brought on, and often has multiple writers work on it before the script is given a green-light.
Screenwriting software 
Detailed computer programs are designed specifically to format screenplays, teleplays and stage plays. Celtx, DreamaScript, Movie Magic Screenwriter, Scrivener, Final Draft, Movie Outline 3.0, FiveSprockets, and Montage are several such programs. Software is also available as web applications, accessible from any computer, and on mobile devices.
See also 
- Writing section from the MovieMakingManual (MMM) Wikibook, especially on formatting.
- Act structure
- Closet screenplay
- Screenplay slug line
- Screenwriter's salary
- Screenwriting software
- List of film-related topics
- List of screenwriting software
- Dreams on Spec
- Guide to Literary Agents
- Writer's Digest
Further reading 
- David Trottier (1998). The Screenwriter's Bible: A Complete Guide to Writing, Formatting, and Selling Your Script. Silman-James Press. ISBN 1-879505-44-4. - Paperback
- Yves Lavandier (2005). Writing Drama, A Comprehensive Guide for Playwrights and Scritpwriters. Le Clown & l'Enfant. ISBN 2-910606-04-X. - Paperback
- Judith H. Haag, Hillis R. Cole (1980). The Complete Guide to Standard Script Formats: The Screenplay. CMC Publishing. ISBN 0-929583-00-0. - Paperback
- Jami Bernard (1995). Quentin Tarantino: The Man and His Movies. HarperCollins publishers. ISBN 0-00-255644-8. - Paperback
- Luca Bandirali and Enrico Terrone, Il sistema sceneggiatura. Scrivere e descrivere i film, Lindau, Torino, 2009, ISBN 978-88-7180-831-4.
- Riley, C. (2005) The Hollywood Standard: the complete and authoritative guide to script format and style. Michael Weise Productions. Sheridan Press. ISBN 0-941188-94-9.