<?xml version='1.0'?>
<!DOCTYPE sxe SYSTEM "sxe.dtd" [
<!ENTITY % incent SYSTEM "sxe.ent">
%incent;
]>
<sxe id="123">
 <elem1 attr1='first' attr2='second'>There is some text.<!-- comment --><elem2 att25='25' att42='42'>
   <elem3>
    <elem4>
     <?test processing instruction ?>
    </elem4>
   </elem3>
  </elem2>Here is some more</elem1>
 <elem1 attr1='11' attr2='12'/>
 <elem11><elem111><elem1111/></elem111></elem11>
</sxe>