Learning
This example demonstrates the VizHub V3 runtime environment’s “Hello World” starter, showing a single line of text whose font size is mutable via Alt-drag on the numeric value in the code editor. The code exports a `main` function that receives a `container` DIV and writes an HTML string with an inline style, enabling continuous hot reloading through interactive widgets. It introduces the simplified entry point without an `index.html` file, relying on the container’s measured dimensions for layout.