SVG Fundamentals
This example demonstrates the VizHub V3 Runtime Environment’s “Hello World” template, showing how a simple `main` function exported from `index.js` renders directly into a container’s innerHTML. It highlights interactive editing via Alt-drag on numeric values, such as the font size, enabling continuous hot reloading without an `index.html`. The code uses plain HTML and inline CSS within a template literal, with no external libraries. This blank slate serves as a starting point for building visualizations, supported by a state object and `setState` for immutable updates.