This example demonstrates the basic “Hello World” template for the VizHub V3 Runtime Environment, rendering the text at a fixed font size of 221 pixels in the center of the container. It showcases the environment’s continuous hot-reloading capability, where interactive supporting widgets update the code in real time. The implementation uses plain JavaScript with an exported `main` function that takes a `container` element and sets its `innerHTML` directly. No external data or libraries are required, making it a minimal starting point for new visualizations.