This example recreates a Sol LeWitt drawing using the Document Object Model (DOM) API to construct an SVG scene. It shows a grid of thin, colored horizontal and vertical bars, which are alternately revealed or hidden within a central circular window through two SVG masks. The piece uses JavaScript to generate one hundred horizontal stripes and one hundred vertical stripes, applying a unique mask to each set so that the lines appear only inside the circle or only outside it. The result is a dynamic, geometric interaction of line and void, driven purely by procedural code without any external data.