<style>
  head {
    display: block;
  }
  img {
    content: counter(section, lower-roman);
  }
</style>
<script>
  onload = () => {
    if (window.testRunner)
      testRunner.dumpAsText();
    document.designMode = 'on';
    let img0 = document.createElement('img');
    document.head.appendChild(img0);
    let div0 = document.createElement('div');
    img0.appendChild(div0);
    let input = document.createElement('input');
    div0.appendChild(input);
    getSelection().setBaseAndExtent(input, 0, input, 0);
    document.execCommand('Indent');
    document.body.innerHTML = "This test passes if it does not assert.";
  };
</script>