This example demonstrates a minimal VizHub project structure, showing how to load D3 via UNPKG and use ES6 module imports for local code. The page renders the text “Hello VizHub!” centered on the screen using D3’s `select` method to set the text content of a `div` element. The code also defines a regular expression and a numeric constant, though these are not used in the display. D3 v5 is loaded from a CDN, with styling applied via external CSS.