<?xml version="1.0"?>
<!DOCTYPE root 
[
<!ELEMENT root (#PCDATA)>
<!ATTLIST root att CDATA #IMPLIED>
<!--* Missing closing bracket in NotationDecl *-->
<!NOTATION JPGformat PUBLIC "-//JPG//DTD//JPGFormat"
<!ENTITY aImage SYSTEM "image.jpg" NDATA JPGformat>
]>
<root/>