="#controls" class="header-anchor"
  aria-hidden="true">Controls</a></h2>
  <p><kbd>Right Click</kbd> on the controls pops up a context menu
  provided by DAW.</p>
  <p>Knob and slider provides following controls:</p>
  <ul>
  <li><kbd>Ctrl</kbd> + <kbd>Left Click</kbd>: Reset value.</li>
  <li><kbd>Shift</kbd> + <kbd>Left Drag</kbd>: Fine adjustment.</li>
  <li><kbd>Middle Click</kbd> : Rotate through minimum, default and
  maximum value.</li>
  <li><kbd>Shift</kbd> + <kbd>Middle Click</kbd> : Take floor o