A grid of thin horizontal and vertical bands fills the browser window, but a circular mask reveals only the central intersection of the two patterns. The piece reproduces a Sol LeWitt wall drawing. Created with D3.js (v6.6.1) using `select`, `range`, and `.join` to build SVG `rect` elements, it applies two SVG masks—one with a black background and white circle, the other inverted—to cut the stripes into a disc-like view at the center of the canvas.