This example demonstrates a minimal D3 version 6 setup that displays the text “Hello World” on a web page. It uses D3’s CDN script tag to load the library and a separate bundle.js file to execute the JavaScript logic. The code selects an HTML `<pre>` element by its ID and sets its text content with the message, relying on the Document Object Model API rather than D3’s selection methods. The page is styled with a large centered font size.