<p>This tests creating a selection based inside a nested editable region that extends out to editable content that is inside the same highest editable root.  'One' through 'Three' should be selected.</p>
<div contenteditable="true">
<div id="extent">One</div>
<div contenteditable="false"><span>Two</span> <span id="base" contenteditable="true">Three</span></div>
<div>Four</div>
</div>

<script>
var base = document.getElementById("base");
var extent = document.getElementById("extent");

var sel = window.getSelection();
sel.setBaseAndExtent(base, 1, extent, 0);
</script>