This example reproduces a Sol LeWitt drawing using an SVG canvas. It shows a single black square rectangle positioned at the top-left corner of a 960×500 pixel viewport. The code creates the SVG and rectangle elements dynamically using the DOM API `document.createElementNS` with the SVG namespace, then appends them to the page body. The rectangle’s dimensions are set via `setAttribute`, though its fill color is commented out, leaving it with the default black.