This D3.js reproduction of a Sol LeWitt artwork generates an SVG pattern of horizontal and vertical stripes across the full browser window. It uses D3’s `select`, `append`, and `range` APIs to create 100 rect elements per orientation, with each stripe masked by a circle that either reveals or hides the stripes. Two masks are rendered with inverted black-and-white fills, creating a circular intersection of differently oriented line fields. The piece visualizes geometric abstraction through code, relying on SVG masks and D3’s data-driven element joins.