# Virtual Document Sample

This is a sample extension that shows how to add virtual documents to the editor.

![cowsay](https://github.com/Microsoft/vscode-extension-samples/blob/master/virtual-document-sample/cowsay.gif)


## VS Code API

### `vscode` module

- [`workspace.registerTextDocumentContentProvider`](https://code.visualstudio.com/docs/extensionAPI/vscode-api#workspace.registerTextDocumentContentProvider)
- [`commands.registerCommand`](https://code.visualstudio.com/docs/extensionAPI/vscode-api#commands.registerCommand)
- [`window.showInputBox`](https://code.visualstudio.com/docs/extensionAPI/vscode-api#window.showInputBox)