This example reproduces a Sol LeWitt art piece using D3 v3 and SVG. It displays a grid of horizontal and vertical lines that are selectively masked by two overlapping circular regions, creating a geometric pattern of intersecting lines with circular cutouts. The code uses raw DOM manipulation with `document.createElementNS` to construct SVG elements, defining two `mask` elements with `rect` and `circle` shapes to control which parts of the line grid are visible. The rendering is resolution-independent, adapting to the full browser window dimensions.