This reproduction of a Sol LeWitt wall drawing uses D3.js to render a grid of intersecting black and white lines. The visualization shows 100 horizontal and 100 vertical rectangles, each masked by a large geometric symbol. The piece uses `select`, `range`, `symbols`, and `symbol` from D3 to generate SVG output. Two masks, one inverted, apply distinct shapes to the horizontal and vertical line groups, creating a layered, patterned effect across the full browser window.