This example generates a dynamic, grid-based composition inspired by Sol LeWitt’s geometric art. It uses JavaScript and the SVG API to draw two sets of alternating horizontal and vertical rectangles. A circular mask is applied to the first set, creating a central circular window, while an inverse mask on the second set produces a complementary ring effect. The code constructs SVG elements programmatically via `createElementNS`, setting rectangles and masks in a loop to form the final pattern.