This example reproduces a Sol Lewitt wall drawing using D3.js. A dense grid of horizontal and vertical rectangles fills the entire viewport, while two SVG masks reveal only a circular intersection of the lines. The first mask shows the horizontal lines within a white circle, and the second mask displays the vertical lines, creating a clean geometric composition. The code uses d3.range to generate 100 line positions and d3 selections with .join to append all SVG rect elements.