A minimal SVG circle is centered in the page with a radius of 100, using no JavaScript or D3 APIs. The example consists solely of an HTML5 document with an inline `<svg>` element and a single `<circle>` tag, rendering a static, unstyled circle. It demonstrates the most basic structure for embedding vector graphics directly in HTML, with the circle appearing as a black shape on a white background. The code includes no interactivity, animation, or data binding, serving purely as a starting point for SVG visualization.