This example is a minimal HTML page that renders a single SVG circle, serving as a basic test of scalable vector graphics within a web document. The index.html file contains a `<svg>` element with a circle shape defined by a radius of 100 units, though the circle lacks a fill or stroke, making it invisible in a typical browser when rendered without styling. The example uses raw HTML and inline SVG markup, with no external JavaScript libraries or data sources involved. It demonstrates the fundamental structure for embedding SVG content directly in a webpage.