This example generates an abstract, generative art composition in the browser, extending the style of Sol LeWitt. It displays a grid of horizontal and vertical lines that are partially hidden by two masks, creating a dynamic interplay of shapes. The visualization uses the D3.js library to build the SVG and apply its `symbol` API to draw various symbols within the masks, with the SVG `mask` element controlling visibility. The final image is a large, screen-filling pattern of lines and geometric icon shapes that appear to emerge from the underlying grid.