chromium/third_party/blink/web_tests/svg/text/text-underline-position.svg

<?xml version="1.0"?>
<svg xmlns="http://www.w3.org/2000/svg" width="800" height="600">
<style>
text {
  writing-mode: vertical-rl;
  letter-spacing: 10px;
}
#t1, #g1 {
  font-size: 40px;
  text-decoration: underline;
  text-underline-position: left;
}
#t2 {
  font-size: 20px;
  text-decoration: underline;
  text-underline-position: right;
}
</style>
<text id="t1" x="40" y="20">Not scaled</text>
<text id="t2" x="80" y="10" transform="scale(2)">Scaled</text>
<g id="g1"><text x="280" y="20">Wrapped with &lt;g></text></g>
</svg>