This example demonstrates a minimal D3.js version 7 setup, rendering the text “hello world” inside a pre element on a webpage with an extremely large 13em font size. The code uses the `select` function from D3 to target the body element and set its text content, while also directly manipulating the HTML element’s innerHTML property. It loads the D3 library from a CDN and serves as a basic template for starting new D3 projects, showing the simplest possible way to integrate D3 with plain HTML and JavaScript.