result/dtd6 - third_party/libxml2 - Git at Google

 <?xml version="1.0"?>
 <!DOCTYPE doc [
 <!ELEMENT doc (a | b)*>
 <!ELEMENT a (#PCDATA)>
 <!ELEMENT b (#PCDATA)>
 ]>
 <doc>
   <a>This</a>
   <b> is a valid</b>
   <a> document</a>
 </doc>
	<?xml version="1.0"?>
	<!DOCTYPE doc [
	<!ELEMENT doc (a \| b)*>
	<!ELEMENT a (#PCDATA)>
	<!ELEMENT b (#PCDATA)>
	]>
	<doc>
	<a>This</a>
	<b> is a valid</b>
	<a> document</a>
	</doc>