doc/icons/arrow-start.svg

<?xml version="1.0" encoding="utf-8"?>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="-26 -13 26 26" width="26" height="26" transform="rotate(180)">
<rect x="-26" y="-13" width="26" height="26" fill="#ccc"/>
<marker id="arrow" viewBox="0 0 10 10" refX="9.5" refY="5" markerWidth="4" markerHeight="4" orient="auto-start-reverse" overflow="visible">
  <path d="M 0 -1 L 10 3.85405 L 10 6.14595 L 0 11 z"/>
</marker>
<line x1="-22" x2="-4" stroke="black" stroke-width="3" stroke-linecap="round" marker-end="url(#arrow)"/>
</svg>