This piece reproduces a Sol LeWitt drawing using D3.js. It renders two masks—one inverted—that apply overlapping patterns of thick vertical and horizontal lines across the full canvas. The lines are generated as SVG rectangles, with each set filtered through a different mask to create the geometric interplay. Built with D3 v6, it uses `d3.symbol`, `d3.range`, and `d3.select` to construct the SVG output dynamically.