This D3.js (v7.9.0) visualization recreates a Sol LeWitt-inspired wall drawing using two perpendicular sets of vertical and horizontal strips. Each set is masked by a distinct pattern, with one mask inverted relative to the other, creating an interlocking grid of geometric symbols. The SVG output is rendered directly to the browser window, using D3’s selection, symbol, and mask APIs to compose the overlapping forms. The code employs `d3.select`, `d3.range`, `d3.symbol`, and mask definitions to generate the alternating shapes at fixed intervals.