<macroSpec ident="data.INTERVAL.HARMONIC" module="MEI" type="dt">
                        
                        <desc>A token indicating diatonic interval quality and size.</desc>
                        
                        <content>
                           
                           <rng:choice>
                              
                              <rng:data type="token">
                                 
                                 <rng:param name="pattern">[AdMmP][0-9]+</rng:param>
                                 </rng:data>
                              </rng:choice>
                           </content>
                        </macroSpec>