This example reproduces a Sol LeWitt wall drawing as a generative SVG composition. It renders a grid of thin horizontal and vertical lines across the full browser window, using a mask to create overlapping geometric patterns. The code builds two masked layers with `d3.select`, `d3.range`, and a custom `renderMask` function, applying contrasting black-and-white fills to shape the visible linework. Built with D3 v6, the visualization demonstrates SVG shape construction and masking techniques.