This example reproduces a Sol LeWitt-inspired drawing using D3.js (v3) to render an SVG canvas. It creates 100 horizontal marks, each with a fixed height and a width equal to the full window width, and applies a circular clipping mask via an SVG `mask` reference. The code uses `select('body').append('svg')` to build the visualization and a JavaScript array to define the mark positions and dimensions, with a simple loop populating the data.