<style>
  br {
    content: '';
  }
</style>
<script>
  onload = () => {
      
    if (window.testRunner)
      testRunner.dumpAsText();
        
    document.designMode = 'on';
    document.execCommand('SelectAll');
    document.execCommand('InsertImage', false, '#');
    let ifr0 = document.createElement('iframe');
    document.body.appendChild(ifr0);
    ifr0.onload = () => {
      document.execCommand('JustifyRight');
    };
    document.execCommand('InsertParagraph');
    getSelection().extend(document.body);
    document.execCommand('InsertParagraph');

    document.write('Test passes if it does not crash\n');
    document.write('PASS');
  };
</script>