xml/relaxng/testData/highlighting/rng/parent-ref-1.rng

<grammar xmlns="http://relaxng.org/ns/structure/1.0" ns="urn:test:simple.rng">

  <define name="outer" />

  <define name="target1">
    <grammar>
      <define name="foo">
        <parentRef name="outer" />
      </define>
    </grammar>
  </define>
</grammar>