> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lightcraft.pro/llms.txt
> Use this file to discover all available pages before exploring further.

# Writing scripts

> Create, upload, and edit screenplays in Fountain format within Spark Story

## Creating a blank script

Open a production and select **New Script** to create a blank screenplay. Spark Story uses Fountain syntax for screenplay formatting — scene headings, dialogue, action lines, and transitions are all supported.

## The script editor interface

The script editor includes:

* **Toolbar** — Formatting controls for scene headings, dialogue, action, and transitions.
* **Formatting palette** — Quick-access panel for common Fountain elements.
* **Sidebar** — Lists all scenes generated from your script headings.

## Scene headings

Scene headings (also called slug lines) structure your production. Each heading that begins with `INT.`, `EXT.`, or similar prefixes automatically creates a corresponding scene in the scene editor.

Write headings in standard Fountain format:

```
INT. STUDIO - DAY
EXT. ROOFTOP - NIGHT
```

See [script outline and 3D scene list](/spark/script-outline-and-3d-scene-list) for details on how headings become editable 3D scenes.