This example shows a minimal React application rendering the text “Hello React!” in a large, centered format. The code uses ReactDOM.render to mount a functional App component onto a div with the id “root,” and applies styling through a CSS class named “message” defined in index.html. It demonstrates the basic structure of a React 16.10.0 project, importing React and ReactDOM directly from UMD builds. The example serves as a starter template for interactive visualizations, with the App component as the entry point for future development.