This example demonstrates masked striped patterns overlaid on top of each other. It creates 100 horizontal rectangles and 100 vertical rectangles, each with a height or width of 10 pixels, spaced 20 pixels apart. The rectangles are masked using SVG masks with circular cutouts, creating a crosshatch effect with a circular reveal. The visualization uses D3 v6 with `select`, `selectAll`, and `data` joins to bind the mark arrays to the SVG elements, rendering the output as SVG in a React-styled HTML page.