<tremolo> (Double)

<measure number="92" width="345">
   <note default-x="89">
      <pitch>
         <step>A</step>
         <octave>1</octave>
      </pitch>
      <duration>32</duration>
      <voice>3</voice>
      <type>half</type>
      <time-modification>
         <actual-notes>2</actual-notes>
         <normal-notes>1</normal-notes>
      </time-modification>
      <stem default-y="0">up</stem>
      <staff>2</staff>
      <beam number="1">begin</beam>
      <notations>
         <ornaments>
            <tremolo type="start">2</tremolo>
         </ornaments>
         <slur number="1" type="start" placement="below"/>
      </notations>
   </note>
   <note default-x="149">
      <pitch>
         <step>A</step>
         <octave>2</octave>
      </pitch>
      <duration>32</duration>
      <voice>3</voice>
      <type>half</type>
      <time-modification>
         <actual-notes>2</actual-notes>
         <normal-notes>1</normal-notes>
      </time-modification>
      <stem default-y="10">up</stem>
      <staff>2</staff>
      <beam number="1">end</beam>
      <notations>
         <ornaments>
            <tremolo type="stop">2</tremolo>
         </ornaments>
      </notations>
   </note>
   <note default-x="202">
      <pitch>
         <step>A</step>
         <octave>1</octave>
      </pitch>
      <duration>32</duration>
      <voice>3</voice>
      <type>half</type>
      <time-modification>
         <actual-notes>2</actual-notes>
         <normal-notes>1</normal-notes>
      </time-modification>
      <stem default-y="0">up</stem>
      <staff>2</staff>
      <beam number="1">begin</beam>
      <notations>
         <ornaments>
            <tremolo type="start">2</tremolo>
         </ornaments>
      </notations>
   </note>
   <note default-x="279">
      <pitch>
         <step>A</step>
         <octave>2</octave>
      </pitch>
      <duration>32</duration>
      <voice>3</voice>
      <type>half</type>
      <time-modification>
         <actual-notes>2</actual-notes>
         <normal-notes>1</normal-notes>
      </time-modification>
      <stem default-y="10">up</stem>
      <staff>2</staff>
      <beam number="1">end</beam>
      <notations>
         <ornaments>
            <tremolo type="stop">2</tremolo>
         </ornaments>
         <slur number="1" type="stop"/>
      </notations>
   </note>
</measure>