<?xml version="1.0" ?>
<!DOCTYPE SMIL PUBLIC "-//W3C//DTD SMIL 2.0 Basic//EN"
"http://www.w3.org/TR/REC-smil/2000/SMIL20Basic.dtd">

<!-- Focus of this test: layout element, attribute variations -->
<!-- Invalid comment line -->
<?XML version="1.0" ?><smil xmlns="http://www.w3.org/TR/REC-smil/2000/SMIL20/Basic">   <doc a1="&amp;#123:"/></smil>
