<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="100px" height="100px">
  <text fill="#000" font-family="Ahem" font-size="12px" transform="rotate(90 50 50)" x="50" y="50">foobar</text>
</svg>