var s = window.getSelection();
var e = document.getElementById("test");
-s.setPosition(e, 0);
+s.collapse(e, 0);
s.modify("move", "forward", "character");
s.modify("extend", "forward", "line");
document.execCommand("InsertHTML", false, "<div>bar</div>baz<br class='Apple-interchange-newline'>");