This piece recreates a Sol LeWitt drawing as an interactive web graphic, showing a grid of sharp horizontal and vertical lines that intersect inside a central circular window. The artwork displays a stark contrast: dense, parallel line bands form a square field, while the circular area isolates a clean, empty center. The rendering uses JavaScript to dynamically build an SVG, creating layered rect elements and applying two distinct SVG masks to control which lines appear within the circle. This direct manipulation of SVG nodes and mask definitions produces the geometric, mask-based visual effect.