This D3.js (v7.9.0) example constructs an SVG composition inspired by Sol LeWitt's geometric art. It draws a grid of vertical and horizontal stripes, each set masked by overlapping circles centered on the canvas. The first group of vertical rectangles is clipped by a circular mask, while the second group of horizontal rectangles is clipped by an inverse mask, revealing a cross-like pattern. The project uses D3's `select`, `append`, `range`, and the `.join()` API to build the SVG elements programmatically.