This example reproduces a Sol LeWitt wall drawing as a generative SVG composition. It shows a series of vertical black bars covering the full height of the browser window, overlaid with horizontal black lines that step diagonally across the canvas. The code uses the Document API to create SVG elements, including nested `rect` and `circle` nodes, with two partially commented-out circle masks that would limit the drawing’s visible area. The piece dynamically sizes to the viewport, using a fixed 20-pixel spacing for vertical bars and a 10-pixel step for the diagonal lines.