<!DOCTYPE html [
<!ATTLIST p attrExtEnt ENTITY #IMPLIED>
<!ENTITY ent1 "Hello">
<!ENTITY ent2 SYSTEM "world.txt">
<!ENTITY entExt SYSTEM "earth.gif" NDATA gif>
<!NOTATION gif SYSTEM "viewgif.exe">
]>
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>canonicalform05</title></head><body onload="parent.loadComplete()">
<p attrExtEnt="entExt">
   &ent1;, &ent2;!
</p></body></html>

<!-- Let world.txt contain "world" (excluding the quotes) -->
