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    <p>Hi all,</p>
    <p><br>
    </p>
    <p>I need a Schemtron rule which indicates an error when <li>
      elements do not have any child elements. No error schould be
      indicated for <li> elements with an "conkeyref" attribute
      and also for <li> elements which are children of any element
      with a "conkeyref" attribute.</p>
    <p><br>
    </p>
    <p>I have defined two separate rules...<br>
    </p>
    <p><br>
    </p>
      <sch:pattern id="Check_LI2"><br>
        <sch:rule context="<b>li[not(@conkeyref)]</b>"><br>
          <sch:assert test="*">List does not contain any child
    elements</sch:assert><br>
        </sch:rule><br>
      </sch:pattern><br>
    <br>
      <sch:pattern id="Check_LI3"><br>
        <sch:rule context="<b>li[not(parent::*[@conkeyref])]</b>"><br>
          <sch:assert test="*">List does not contain any child
    elements</sch:assert><br>
        </sch:rule><br>
    <p>  </sch:pattern></p>
    <p><br>
    </p>
    <p>... but I think I need to combine them into a single rule with an
      OR or AND operator.</p>
    <p><br>
    </p>
    <p>  <sch:pattern id="Check_LI3"><br>
          <sch:rule context="<b>li[not(@conkeyref)]</b> <b><font
          color="#ff0000">OR </font></b><b>li[not(parent::*[@conkeyref])]
      </b>"><br>
            <sch:assert test="*">List does not contain any child
      elements</sch:assert><br>
          </sch:rule><br>
    </p>
    <p>  </sch:pattern></p>
    <p><br>
    </p>
    <p>However, this syntax is invalid. Can somebody help me?</p>
    <p><br>
    </p>
    <p>Regards,</p>
    <p>Frank<br>
    </p>
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            <p><strong>Frank Dissinger</strong></p>
            <p>Documentation Manager</p>
            <p>....................................................................</p>
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            <p><strong>CGS Publishing Technologies International GmbH</strong></p>
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