<?xml version="1.0" ?>
<!DOCTYPE myhtml [ 
<!-- This example declares title to only take text data content,
     and declares a new 'br' element that must be empty. 
     -->
 <!ELEMENT myhtml ANY >
 <!ELEMENT head ANY >
 <!ELEMENT title (#PCDATA) >
 <!ELEMENT body ANY >
 <!ELEMENT h1 ANY >
 <!ELEMENT p ANY >
 <!ELEMENT br EMPTY >
]>
<myhtml>
<head><title> 
Simple example XML document
</title> </head>
<body>
<h1> Simple Example XML Document  </h1>
<p> This is an example XML document, with a DTD defining the
syntax constraints preceding the markup. This document is consistent 
with the rules in the DTD, so it should validate.
</p>
<p> Here is a second paragraph of text.  This one has 
-- <br /> --
two br elements inside it.  One uses the 'empty element' notation,
and the other has both start and end tags, but is 'empty' 
-- <br></br> -- 
there is nothing inside the element.
</p> 
</body>
</myhtml>
