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This example demonstrates the minimal setup required to begin using D3 version 7 by rendering the text “Hello D3 version 7” directly into the body of an HTML page. The code imports the `select` function from the D3 library and uses it to choose the document body, then sets its text content. The page loads D3 version 7.8.2 from an unpkg CDN, while the main script is separated into `index.js` and referenced as `bundle.js`. The example serves as a straightforward entry point for understanding D3’s DOM manipulation API.