<?xml version=“1.0” standalone=“no”?> <!DOCTYPE svg PUBLIC “-//W3C//DTD SVG April 1999//EN” “www.w3.org/Graphics/SVG/svg-19990412.dtd”> <svg width=“4in” height=“3in”>
<defs> <symbol id="Triangle" min-x="0" min-y="0" max-x="100" max-y="100" ref-x="0" ref-y="50"> <path d="M 0 0 L 0 100 L 100 50 z"/> </symbol> </defs> <desc>An double-headed arrow example using markers </desc> <path d="M0 0">
<!– Place an arrowhead rotated 180 degrees at the
beginning of the path --> <marker href="#Triangle" width="200" height="200" style="text-transform: rotate(180)"/> <data d="M 2000 2000"/>
<!– Turn off markers in the middle of the path –>
<marker href=""/> <data d="L 4000 2000 L 4000 4000"/>
<!– Place an arrowhead at the end of the path–>
<marker href="#Triangle" width="200" height="200"/> <data d="L 6000 4000"/> </path>
</svg>