1 <?xml version="1.0" ?>

     2 <!DOCTYPE SMIL PUBLIC "-//W3C//DTD SMIL 2.0 Basic//EN"

     3 "http://www.w3.org/TR/REC-smil/2000/SMIL20Basic.dtd">

     4 

     5 <!-- Focus of this test: layout element, attribute variations -->

     6 <!-- Invalid comment line --><smil xmlns="http://www.w3.org/TR/REC-smil/2000/SMIL20/Basic">   <head/></smil>