This example reproduces a Sol LeWitt-inspired geometric artwork using D3.js and SVG rendering. It displays a grid of horizontal and vertical black bars that are partially revealed through two circular mask effects, creating intersecting line patterns across the full viewport. The visualization uses d3.select and data joins to generate 100 rectangle elements for each orientation, while SVG mask elements with circle shapes control which portions of the lines remain visible. The bars are positioned mathematically based on array indices, with the masks centered in the window to produce the layered optical effect.