This example shows a simple Scalable Vector Graphics (SVG) circle with a fixed radius of 200 units, rendered directly in an HTML page. The entire visualization is contained in the `index.html` file, which uses raw SVG markup rather than a JavaScript library like D3. The circle is centered at the default origin (0,0) of the SVG viewport, with no fill or stroke styling applied. The page includes a minimal HTML structure with a title and a body element, and the SVG is drawn inline. A separate README file and a linked YouTube video provide supplementary context.