This example creates a grid-based generative drawing by rendering 100 horizontal and vertical black stripes overlaid with two SVG masks. The masks use large symbols from D3’s `symbols` API to carve circular and other geometric patterns into the stripes, producing a Sol Lewitt–inspired composition. The code uses `d3.select`, `range`, and the `.join` method to build the stripes, while the `renderMask` function dynamically appends `mask` elements and paths. The result is a layered, monochrome visual that combines repetitive linework with symbolic cutouts.