This example displays a dense scatter of overlapping circles on a grey SVG canvas, with positions and fill colors randomly derived from nested array mappings. Built with React and ReactDOM, the visualization renders three levels of map operations over a numeric array, generating circles with radii of 10 pixels and RGB values computed from the loop index. The SVG output uses the `id='svg'` element with a fixed 960×500 viewport, while color intensity scales with the square of the array value.