Records camera setup, take length, costume and props between shots — guarantees visual continuity across shooting days. Without script notes, no match cut works.
The Script Supervisor — often called the Scripter — sits next to the camera and logs every take with a precision that oscillates between paranoia and craft. His notes later determine in the edit whether two shots match or if the actor suddenly drinks with the wrong hand. This is not an administrative task; it is continuity as a craft.
On set, the Scripter systematically documents: Which lenses were used? How long did the camera run? Where did the actor stand, what arm position did he have, what prop was on the table? With each repetition of the same shot — and there are many — he notes deviations. An actor holding a cigarette on the left in the first take must do so in the third take as well, otherwise it won't cut. The Scripter ensures that such details are not left to memory. He works closely with the director, cinematographer, and set design, becoming the institutional memory of a film.
The script notes are later handed over to the editor — some editors work blind without these documents, but that is risky. With the notes, he can more quickly decide which takes match, which plot holes might arise. For long dialogue scenes spanning multiple shooting days, the system becomes crucial: the Scripter marks cut-in and cut-out points, notes where glances fall, when a character is sitting or standing. This saves the editor hours of blind searching. It becomes particularly critical in action sequences or stunts, where every frame counts — here, script documentation becomes a technical blueprint.
Good Script Supervisors develop their own notation, a personal shorthand that becomes faster over time. Some also additionally photograph each shot — Polaroid, digital — to be able to visually reference during the edit. This takes time, but it pays off. The Scripter is not creative in the sense of framing; he is systematic in the sense of reliability. A film without solid script work can become chaos later in the edit — continuity errors arise, questions about editing logic cannot be answered. Therefore, good Script Supervisors are worth their weight in gold.