This example demonstrates a minimal D3 version 7 setup by rendering the text “Hello D3 version 7” in the center of the page. It uses `d3.select` to target the `<body>` element and calls the `.text()` method to insert the string directly into the HTML. The page loads the D3 library from a CDN and applies a large font size via inline CSS. The example serves as a basic starting point for understanding how to begin a D3 project.