This example demonstrates the basic setup for using D3 version 7, rendering the text “Hello D3 version 7” in the browser body at a large font size. It imports D3’s `select` method and combines it with custom ES modules from separate files, including a `something.js` module that exports a string combining values from `thing.js`. The `index.html` loads D3 from a CDN as a global script, while a pre-built `bundle.js` (compiled from the JavaScript modules) is invoked afterward to execute the D3 selection and text assignment.