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<section id="ControlDurctl">
  <title>Duration Control Statements</title>
 
  <para>
    The opcodes one can use to manipulate a note's duration are
    <link linkend="ihold"><citetitle>ihold</citetitle></link>, 
    <link linkend="turnoff"><citetitle>turnoff</citetitle></link>, and
    <link linkend="turnon"><citetitle>turnon</citetitle></link>.
  </para>

</section>
