This example demonstrates a minimal D3.js setup within VizHub, showing how to load the library via UNPKG and use ES6 modules for local code organization. It renders a greeting message by selecting a DOM element with `d3.select` and setting its text content, while applying styling through an external CSS file. The visualization highlights basic setup patterns rather than data-driven graphics, with no datasets or scales involved. The code imports utilities from the `d3` package and a custom exported variable from a local module, illustrating modular JavaScript structure for web-based visualizations.