SVG viewports
<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20001102//EN" "http://www.w3.org/TR/2000/CR-SVG-20001102/DTD/svg-20001102.dtd"> <svg width="800" height="400" viewBox="0 0 800 400"> <g> <rect style="fill:red;" x="0" y="0" width="100" height="50" /> <line x1="0" y1="24" x2="100" y2="24" style="stroke:white;stroke-width:2" /> <line x1="49" y1="0" x2="49" y2="50" style="stroke:white;stroke-width:2" /> </g> </svg>