This example demonstrates the simplest possible D3 setup: a blank page that displays the text “Hello D3 version 6” in the browser body. The code uses `d3.select` to target the `body` element and sets its text content, pulling the D3 library from an external CDN. The page also includes a video tutorial embedded via an iframe, and the JavaScript is separated into an `index.js` file that is bundled into `bundle.js` for execution. It highlights the core `select` and text-insertion API without any data or complex rendering.