This example reproduces a Sol LeWitt-inspired drawing using D3 and SVG masks. It displays a grid of horizontal and vertical bars, with a central circular region where the two sets of bars visually intersect and invert their colors. The code uses D3 selections with `range` and `join` to generate 100 rectangles in each orientation, and defines two SVG masks with `circle` elements to control which bars are visible. The final image resembles a minimalist bar chart filtered through a circular aperture.