A React starter template renders a static "Hello React!" message. The example demonstrates the minimal setup for a React-based visualization project, using `ReactDOM.render` to mount a functional `App` component into the `root` div. It imports React 16.13.1 and ReactDOM from UMD builds, with all styling handled by a CSS class. The code shows the basic structure for integrating React with a visualization library, though it does not yet include any data or charting logic.