This example reproduces a Sol LeWitt drawing by layering two sets of striped rectangles over a central circular mask. A grid of horizontal and vertical bars is clipped to reveal a circle in the center, while the surrounding area shows only one orientation of stripes. Using plain JavaScript and the SVG API, it dynamically creates `rect` elements and applies two `mask` definitions with intersecting `circle` and `rect` shapes to alternate the visible stripes. The code runs entirely in the browser with no external libraries.