This example reproduces a Sol LeWitt art piece using D3.js, generating a grid of thin horizontal and vertical rectangles across the full browser window. The visualization appears as a dense crosshatch pattern, with a circular region in the center where the lines are inverted—dark lines show through a light circle, while the surrounding area has light lines on a dark background. The code builds an SVG, creates rect elements with D3’s `range` and `join` methods, and applies two SVG masks with circles to achieve the contrasting effect.