<?xml version='1.0' ?>
<!DOCTYPE section SYSTEM "./ext-subset.dtd" [ 
<!-- Note how all the elements used in the document are declared
     and all have ANY as their content model.  Not terribly elegant,
     but at least all the elements are declared.  -->

 <!ELEMENT section (h2,div)* >
 <!ELEMENT h2 (#PCDATA) >
 <!ELEMENT div (#PCDATA) >

 <!ATTLIST h2 lang CDATA 'en' >
 <!ATTLIST h2 lang CDATA 'fr' 
              align (left | right) 'right' >
 <!ATTLIST h2 align (left | center | right ) 'center' >

]>
<section>
   <h2> This is a heading </h2>
   <div> This is the stuff inside the heading. </div>
   <h2 align="left"> some other heading </h2>
   <div> some more stuff inside a div </div>
</section>

