This piece reproduces a Sol LeWitt wall drawing as an interactive SVG composition. It shows a grid of horizontal and vertical black lines that intersect across the full browser window, except within a circular mask centered on the screen. The code uses raw JavaScript to construct and append SVG elements, creating 100 horizontal and 100 vertical rectangles. Only the horizontal lines are clipped by the mask, which is defined using the SVG `mask` element and referenced via the `url(#circle-mask)` attribute, leaving the vertical lines unbroken. The work is generated entirely from the code’s geometry, echoing LeWitt’s instruction-based art.