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<section id="ControlSensing">
  <title>Sensing and Control</title>

  <para>
    Opcodes that read from signals or on-screen controls are 
    <link linkend="button"><citetitle>button</citetitle></link>, 
    <link linkend="checkbox"><citetitle>checkbox</citetitle></link>, 
    <link linkend="control"><citetitle>control</citetitle></link>, 
    <link linkend="follow"><citetitle>follow</citetitle></link>, 
    <link linkend="follow2"><citetitle>follow2</citetitle></link>, 
    <link linkend="peak"><citetitle>peak</citetitle></link>, 
    <link linkend="pitch"><citetitle>pitch</citetitle></link>, 
    <link linkend="pitchamdf"><citetitle>pitchamdf</citetitle></link>, 
    <link linkend="sense"><citetitle>sense</citetitle></link>, 
    <link linkend="sensekey"><citetitle>sensekey</citetitle></link>, 
    <link linkend="setctrl"><citetitle>setctrl</citetitle></link>, 
    <link linkend="tempest"><citetitle>tempest</citetitle></link>, 
    <link linkend="tempo"><citetitle>tempo</citetitle></link>, 
    <link linkend="tempoval"><citetitle>tempoval</citetitle></link>, 
    <link linkend="seqtime"><citetitle>setime</citetitle></link>,
    <link linkend="trigger"><citetitle>trigger</citetitle></link>,
    <link linkend="trigseq"><citetitle>trigseq</citetitle></link>, and
    <link linkend="xyin"><citetitle>xyin</citetitle></link>.
  </para>

</section>
