---

• Use an internal identifier

       <rdf:Description rdf:about="#FullSlide">

          <axsvg:IsA>

              <rdf:Description rdf:nodeID="Thing"/>

          </axsvg:IsA>

       </rdf:Description>

       <rdf:Description rdf:nodeID="Thing">

          <axsvg:ConsistsOf rdf:resource="#Axes>

          <axsvg:ConsistsOf rdf:resource="#Legend>

          <axsvg:ConsistsOf rdf:resource="#Datalines>

       </rdf:Description>

• Almost like rdf:ID, but…
• …Thing is invisible from outside the file!

---

Ivan Herman, W3C 40 (144)