  <td class="subsection">4-25-106</td>
         </tr>
         <tr>
            <td class="fieldname" style="padding-left: 30px;">Reference unit</td>
            <td class="fieldname" style="padding-left: 30px;">referenceToReferenceUnitGroup</td>
            <td class="fieldname">r</td>
            <td class="fieldname">[1,1]</td>
            <td class="fieldname"><a target="_blank" href="ILCD_Common_DataTypes.html#GlobalReferenceType">GlobalReferenceType</a></td>
            <td class="fieldname">"Unit gro