# Google Drive / cloud storage integration

UnifiedWriter does not implement Google Drive, Local Disk, App Storage, Backend API, WebDAV, or any other storage provider as product-level File menu destinations.

Storage routing belongs to the Host system. The Host should provide `OpenFile` and `SaveFile` callbacks, or a Host-side adapter, and may route those callbacks to Google Drive or any other provider.

## Recommended integration shape

```js
OpenFile(request, context) -> Promise<OpenFileResponse>
SaveFile(request, context) -> Promise<SaveFileResponse>
```

The Control requests an operation such as `open`, `save`, `saveAs`, or `export`. The Host decides where the file comes from or where it is written.

Demo pages may use a Local Disk callback to show the callback contract, but that is a demo adapter, not a UnifiedWriter runtime menu structure.