Face Part
This example demonstrates the VizHub V3 Runtime Environment’s "Hello World" template, showing how a single exported `main` function renders directly into a provided container. The code sets a numeric `fontSize` variable and uses it in an HTML string to display large centered text via the container’s `innerHTML`. It highlights the platform’s interactive widget feature, where holding Alt and dragging the number in the editor triggers continuous hot reloading, updating the displayed font size in real time without an `index.html` file.