This example uses D3 selections and D3 range to render two sets of 100 striped rectangles on an SVG canvas. One group of horizontal bars is masked by a circular cutout, while a second group of vertical bars uses a complementary mask, creating an intersecting cross pattern. The masks are constructed with SVG `mask` elements containing rectangles and circles. The visualization fills the browser window, with both mask circles centered and sized at 200 pixels radius, producing a circular overlap effect.