This example reproduces a Sol LeWitt-inspired drawing, showing a series of horizontal SVG rectangles that are masked to reveal a circle in the center of the viewport. The code builds the visualization using D3.js methods, specifically `select`, `append`, `attr`, and the `join` operation to create and style the shapes. By setting each rectangle's `mask` attribute to a predefined SVG mask, the piece demonstrates how layered vector shapes can create a generative, minimalist artwork. The rendered output uses SVG and occupies the full browser window.