This example presents a radial tidy tree visualization of the Flare class hierarchy, arranging nodes in concentric circles around a central root. The code uses the `d3.tree` layout with a radial size of 360 degrees, projecting Cartesian coordinates to polar form via a custom `project` function. Data is loaded from `flare.csv` and processed with `d3.stratify` to establish parent-child relationships. Nodes are rendered as SVG circles with labels, connected by curved cubic Bezier paths using `d3.csv` for data ingestion and the `enter` selection pattern for element creation.