<?xml version="1.0"?>
<pml_schema version="1.1" xmlns="http://ufal.mff.cuni.cz/pdt/pml/schema/">
  <description>An oriented graph</description>
  <root name="graph">
    <structure>
      <member name="verteces">
        <list ordered="0">
          <structure>
            <member name="id" as_attribute="1" required="1" role="#ID">
              <cdata format="ID"/>
            </member>
            <member name="label" required="1">
              <cdata format="any"/>
            </member>
          </structure>
        </list>
      </member>
      <member name="edges">
        <list ordered="0">
          <structure>
            <member name="from.rf" required="1" as_attribute="1">
              <cdata format="PMLREF"/>
            </member>
            <member name="to.rf" required="1" as_attribute="1">
              <cdata format="PMLREF"/>
            </member>
          </structure>
        </list>
      </member>
    </structure>    
  </root>
</pml_schema>