A minimal SVG scene displays a single circle with a fixed radius of 100 units, centered at the origin of an unscaled viewport. The page, written in plain HTML, pairs this geometric shape with a heading that reads "hello world!" The markup uses the native `<svg>` element directly, without any JavaScript libraries or data-processing APIs. The example serves as a static, no-frills baseline for rendering vector graphics in a browser, with no animation, interaction, or external data source beyond the inline circle definition.