This example demonstrates a minimal first step with D3 version 6 by rendering the text “Hello D3 version 6 - index.js” centered on a blank page. It uses the `select` function from the `d3` module to target the `<body>` element and sets its text content, while the HTML page loads D3 via a CDN and executes a bundled JavaScript file. The styling applies a large font size and centered alignment to display the output prominently.