              base end length)
  (breakpoints->env breakpoint-list <span style="color: #b0c4de;">:scaler</span> scaler <span style="color: #b0c4de;">:offset</span> offset
                    <span style="color: #b0c4de;">:base</span> base
                    <span style="color: #b0c4de;">:duration</span> (or duration
                                  (and end (* end *sample-duration*))
                                  (and length (* length *sample-duration*)))))</pre>

      <p>
        There are functions