XML Source

<source>
     <three>3</three>
     <ten>10</ten>
     <forty>40</forty>
</source>

Graphotron Source

<graphotron xmlns:vcg="http://zvon.org/graphotron/vcg" xmlns="http://zvon.org/graphotron" >
     <vertex match="/*/three">
          <name select="."/>
          <vcg:borderwidth>3</vcg:borderwidth>
     </vertex>
     <vertex match="/*/ten">
          <name select="."/>
          <vcg:borderwidth>10</vcg:borderwidth>
     </vertex>
     <vertex match="/*/forty">
          <name select="."/>
          <vcg:borderwidth>40</vcg:borderwidth>
     </vertex>
</graphotron>