This example generates an abstract grid pattern using Sol Lewitt-inspired geometry. It draws horizontal and vertical strips of rectangles, then applies two distinct masks with D3’s `symbol` shapes (including circles, crosses, and diamonds) to selectively reveal or hide portions of the grid. The masks are created with `d3.mask`, one inverted against the other, producing a layered interplay between the symbol silhouettes and the underlying striped composition. The visualization uses D3 v7 selections, `range`, and `join` to construct the SVG elements within a full-window viewport.