Format & the Page

Before a single frame is shot, your screenplay is the film. Its format is not decoration. It is a production instrument, tuned over a century so that a director, an actor, and a first assistant director can all read the same page and see the same movie.

What you'll learn

By the end you can lay out every standard element correctly: slugline, action, character cue, dialogue, parenthetical, transition, and extension.
By the end you can read a page of properly formatted script as roughly one minute of screen time, and explain when that estimate drifts.
By the end you can choose the right extension (V.O., O.S., CONT'D) and transition (CUT TO:, DISSOLVE TO:) for a given moment, and say why.
By the end you can explain the reason behind each convention, so you follow it on purpose instead of by superstition.

The page is a machine for reading

Open any professional screenplay and watch what your eye does before you read a word. You already know which lines are dialogue and which are action, because each element lives at a fixed horizontal position. That layout is the whole trick: position encodes meaning, so the reader parses the page almost before reading it. Aristotle held that a well-made whole should be of a magnitude the mind can take in at a single view (Poetics, Butcher trans., 1895). The screenplay page is engineered for exactly that, so the eye grasps it as one unit.

The core elements, top to bottom:

Slugline (scene heading): INT. or EXT., the location, then the time of day. INT. KITCHEN - NIGHT. It answers three production questions at once: inside or out, where, and lit for day or night.
Action: present-tense description of what the camera sees and the microphone hears. Nothing else exists.
Character cue: the speaker's name in capitals, set at a fixed indent about a third of the way in from the left, directly above their dialogue.
Dialogue: what they say.
Parenthetical: a brief delivery or action note beneath the cue, used sparingly.
Transition: CUT TO:, DISSOLVE TO:, right-aligned, marking how one scene gives way to the next.

The early manuals were blunt about the job. Epes Winthrop Sargent (Technique of the Photoplay, 1916) treated the script as a set of instructions for the camera, not a piece of literature, and Esenwein and Leeds (Writing the Photoplay, 1913) drilled the same discipline: the screen tells its story through action, so the page must be written in terms of what can be seen. The camera cannot photograph a private thought.

Tip

Write only what the lens can capture and the mic can hear. "She remembers her mother" is a novel. "She turns the photograph face-down" is a movie.

Why Courier, why one inch, why one minute

The look of the page is not arbitrary taste. It is a measurement system. Screenplays are set in 12-point Courier (or Courier Prime), with margins of about one inch on three sides and a wider left margin, roughly an inch and a half, that leaves room for the brads binding the script. Courier is monospaced: every character, an i or an m, takes the same width, so a page holds a predictable amount of text. That predictability is what makes the oldest rule in the business roughly true. One page runs about one minute of screen time.

Treat that as an estimate, not a law. A page of terse, back-and-forth dialogue can fly by in forty seconds; a dense action page describing a chase can eat two minutes. Frances Taylor Patterson (Cinema Craftsmanship, 1920) preached economy for exactly this reason: every line costs screen time, so make each one earn it. When a scene feels long, count the pages before you argue about the running time.

Extensions and transitions: small marks, real consequences

An extension is the tag in parentheses beside a character cue, and each one states a production fact:

(V.O.) voice-over: the voice comes from outside the story's physical space (narration, a phone heard from the far end, inner monologue as sound). Usually recorded separately.
(O.S.) off-screen: the character is in the scene, just not in frame. On set, on a live mic, a shout from the next room.
(CONT'D): the same character keeps speaking after an action line interrupts the cue, or after a page break.

Confusing V.O. and O.S. is not a typo. It tells the sound department the wrong thing.

Transitions work the same way. They carry information, so use them only when the information matters. A hard cut is the default grammar of film, so CUT TO: is usually implied and omitted. Reach for DISSOLVE TO: when you specifically want the softer optical blend that reads as time passing or a dream. When dialogue must break across a page, the format protects the reader: (MORE) sits at the foot of the page and the name returns up top with (CONT'D), so a page turn never fakes a new speaker. Simultaneous speech gets dual dialogue, two columns side by side.

One freeing fact: none of this is anyone's private property. Format conventions are practical facts of the trade, not copyrightable art, which is why an open plain-text standard like Fountain lets you type a script in any editor and have software render the layout. Learn the conventions once and you own them.

Try it

Take one page you have already written, or write a fresh half-page scene, and format it by hand to spec: slugline, action in present tense, cued dialogue, one parenthetical at most. Read it aloud with a stopwatch. Note the real running time against the one-page/one-minute rule, then mark every action sentence that describes something the camera could not photograph. Rewrite those into visible action.

Reader's rubric

Does every scene open with a slugline naming interior/exterior, location, and time of day?
Is every action line something a camera could see or a mic could hear, with no thoughts or backstory?
Is each element (action, cue, dialogue, parenthetical, transition) at its correct position?
Does every extension state the right production fact, V.O. versus O.S., and is (CONT'D) used correctly?
Are transitions present only where the specific transition matters?
Does dialogue that breaks across a page carry (MORE) and (CONT'D)?