Hello world
This example demonstrates the minimal setup for a VizHub V3 visualization, rendering a simple text message inside a container element using pure JavaScript. The code exports a `main` function that receives the container and options, displaying “Hello World” with the default styling. It highlights the runtime’s interactive widget support, where holding the Alt key and dragging a numeric value in the editor triggers continuous hot reloading. The example uses no external libraries, showcasing the streamlined entry point with `index.js` instead of an `index.html` file.