This visualization reproduces a Sol LeWitt art piece, showing a grid of horizontal and vertical black lines that intersect only within two circular regions. A circle at the center acts as a mask, revealing the line patterns where the two shapes overlap. The code uses the SVG API to create elements and defines two `mask` regions to selectively display the lines. The artwork is generated procedurally with JavaScript loops, drawing 100 horizontal and 100 vertical rectangles without any external data source.