--- /dev/null
+<?xml encoding="ISO-8859-1"?>
+
+<!--*****************************************************************-->
+<!-- DTD FOR ANNOTATED OBJECTS: -->
+<!-- First draft: June 2000, Claudio Sacerdoti Coen -->
+<!--*****************************************************************-->
+
+<!ENTITY % annotation '(#PCDATA|node|attribute)*'>
+
+<!ELEMENT Annotations (Annotation)*>
+<!ATTLIST Annotations
+ of CDATA #REQUIRED>
+
+<!ELEMENT Annotation %annotation;>
+<!ATTLIST Annotation
+ of CDATA #REQUIRED>
+
+<!-- Annotations: -->
+
+<!ELEMENT attribute EMPTY>
+<!ATTLIST attribute
+ name NMTOKEN #REQUIRED
+ id NMTOKEN #REQUIRED
+ child NMTOKEN #IMPLIED
+ grandchild NMTOKEN #IMPLIED>
+
+<!ELEMENT node EMPTY>
+<!ATTLIST node
+ id NMTOKEN #REQUIRED>