This piece generates an abstract composition inspired by Sol Le Witt, using overlapping black grid lines and circular forms defined entirely by SVG masks. It renders a full-screen canvas of vertical and horizontal bars spaced at 20-pixel intervals, with the intersections selectively revealed through two mask definitions that combine white and black shapes. The visualization is built with vanilla JavaScript and SVG DOM manipulation, creating masks via `createElementNS` and applying them through the `mask` attribute on each rectangle, resulting in a dynamic interplay of line and void.