This is the 2.0.0-beta, lots and lots and lots of changes
Have a look at http://xmlsoft.org/upgrade.html

Daniel
diff --git a/result/dtd12 b/result/dtd12
index c7bc1bc..f0d1261 100644
--- a/result/dtd12
+++ b/result/dtd12
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <!DOCTYPE doc [
-<!ENTITY % YN '"Yes"'>
-<!ENTITY WhatHeSaid "He said %YN;">
+<!ENTITY YN '"Yes"'>
+<!ENTITY WhatHeSaid "He said &YN;">
 ]>
 <doc>&WhatHeSaid;</doc>