This example demonstrates fundamental SVG shapes—a circle, a yellow-filled circle, and a thick black line—arranged on a 960 by 500 canvas. It shows how basic geometric primitives are positioned using `cx`, `cy`, `r`, `x1`, `y1`, `x2`, and `y2` attributes. The rendering relies entirely on the SVG API embedded directly in the HTML, with shapes styled via `fill` and `stroke` properties. No external libraries or data sources are used; the visualization is a static, hand-coded illustration of core vector graphics syntax.