This SVG demonstration displays three primitive shapes—a red circle, a yellow rectangle with a blue outline, and a blue line—arranged on a 960-by-500 canvas to illustrate fundamental vector rendering. The code uses raw SVG elements (`<circle>`, `<rect>`, `<line>`) with inline presentation attributes for fill, stroke, and dimensions, requiring no external libraries. It serves as a static, hand-authored example of basic geometric construction rather than a data-driven visualization.