Four isometric cubes are arranged in a row, each drawn with three visible faces in different shades of gray. The cubes decrease in size from left to right, with the largest cube centered on the right and the smallest on the left. The visualization uses D3 v4’s `d3.line()` path generator to construct each face from coordinate points, appending SVG `path` elements to the container. This example demonstrates a simple technique for rendering pseudo-3D volumes in a 2D SVG space, inspired by Munzner’s visualization design concepts.