This example demonstrates the fundamental text rendering capabilities of D3.js alongside the use of local ES6 modules. It loads D3 via UNPKG and uses the `select` function to target a div element by its ID, then sets its text content to a message imported from a separate module. The example also includes a regular expression and a numeric constant defined in the main script, though these values are not used in any visible output. A CSS file styles the message with large, centered text.