A single rounded square icon, resembling a smiling face, is drawn entirely with an SVG `<path>` element. The example demonstrates how basic vector shapes can be combined into a creative illustration using raw path data. The page is minimal, with the shape centered and styled via embedded CSS. The rendering relies solely on the SVG API within an HTML document, showcasing the flexibility of defining complex forms through path commands. No external JavaScript libraries are used; the result depends entirely on the static SVG markup.