# DDP

- [Introduction](https://ddp.drawdy.io/index.md): The Drawdy Driver Protocol and how extensions drive the Drawdy canvas.
- [Quickstart](https://ddp.drawdy.io/quickstart.md): Build, run, and package your first Drawdy driver.
- [Examples](https://ddp.drawdy.io/examples.md): Three runnable drivers in the protocol repo, from a hello world to a physics simulation, and the protocol surface each one uses.
- [Overview](https://ddp.drawdy.io/protocol/overview.md): The message envelope, the driver module contract, and the manifest.
- [Commands](https://ddp.drawdy.io/protocol/commands.md): Every command a driver can issue to Drawdy, with its request and response types.
- [Subscriptions](https://ddp.drawdy.io/protocol/subscriptions.md): Scene, camera, DOM, webview, and input events, and the body each delivers.
- [Webview API](https://ddp.drawdy.io/protocol/webview-api.md): The `acquireDrawdyApi()` global available inside a webview document.
- [Data Types](https://ddp.drawdy.io/protocol/data-types.md): DriverElement, ElementSchema, element properties, ModuleStyling, ToolStyleState, PreviewTransform, and CSS units.