-<!ATTLIST property type CDATA #REQUIRED>
-<!ATTLIST property access "read|write|readwrite" #REQUIRED>
-<!ATTLIST property deprecated #IMPLIED>
+<!ATTLIST property type CDATA #REQUIRED>
+<!ATTLIST property access (read|write|readwrite) #REQUIRED>
+
+<!ELEMENT annotation EMPTY> <!-- Generic metadata -->
+<!ATTLIST annotation name CDATA #REQUIRED>
+<!ATTLIST annotation value CDATA #REQUIRED>