SVG STARTER
This example demonstrates the "Hello World" starting point for the VizHub V3 runtime environment, rendering a simple text message inside a container. The code showcases the new `main` function entry point, which receives a `container` DIV element whose dimensions are available via `clientWidth` and `clientHeight`. An inline style directly sets the font size to 217 pixels, with the text centered. The example highlights the core mechanism for building interactive visualizations, where edits to the numeric value can be made by holding Alt and dragging.