Restriction, DeprecatedClass in OWL Language Reference 31 March 2003

Appendix B declares two Classes (Restriction, Deprecated Class)
to be subClasses of Class.

<rdfs:Class rdf:ID="Restriction">
  <rdfs:label>Restriction</rdfs:label>
  <rdfs:subClassOf rdf:resource="#Class"/>
</rdfs:Class>
<rdfs:Class rdf:ID="DeprecatedClass">
  <rdfs:label>DeprecatedClass</rdfs:label>
  <rdfs:subClassOf rdf:resource="&rdfs;Class"/>
</rdfs:Class>

I think this is an error.
If it's not an error, what is the explanation?
============ 
Dick McCullough 
knowledge := man do identify od existent done;
knowledge haspart proposition list;