This example recreates a Sol LeWitt-inspired grid of horizontal and vertical lines that are partially revealed by two SVG masks containing geometric shapes and D3 symbols. The code uses D3 selections and data joins to draw one hundred alternating stripes across the screen, while the `renderMask` function builds each mask with rectangles and paths generated from `d3.symbol` glyphs. Rendered as an SVG, the piece uses black and white fills to create a dynamic interplay between the line grid and the symbolic cutouts.