test/valid/cond_sect1.xml - third_party/github.com/GNOME/libxml2 - Git at Google

 <!DOCTYPE doc SYSTEM "dtds/cond_sect1.dtd" [
     <!ENTITY % include "INCLUDE">
     <!ENTITY % ignore  "IGNORE">
 ]>
 <doc>
     <child>text</child>
 </doc>
	<!DOCTYPE doc SYSTEM "dtds/cond_sect1.dtd" [
	<!ENTITY % include "INCLUDE">
	<!ENTITY % ignore "IGNORE">
	]>
	<doc>
	<child>text</child>
	</doc>