DAML+OIL for Application Developers

the URI of a Class can be used instead of rdf:Description, i.e.


<Class ...>
  ...
</Class>

is equivalent to


<rdf:Description ...>
  <rdf:type rdf:resource="Class"/>
  ...
</rdf:Description>

if an instance has multiple types, it's fine to use


<Class1 rdf:ID="instance">
  <rdf:type rdf:resource="Class2"/>
</Class1>

which produces
instance with 2 types

typedNodes