
        create and return a new <code>ENVELOPE</code> from a sequence of
        break-point pairs. <code>BREAKPOINTS->ENV</code> with the keywords
        <code>BASE</code>, <code>SCALER</code>, <code>OFFSET</code> and
        <code>DURATION</code> defines an envelope in the style of CLM,
        for example:
      </p>

      <pre class="src src-lisp">(<span style="color: #8deeee;">defun*</span> <span style="color: #87cefa;">make-clm-env</span> (breakpoint-list (scaler 1.0) duration (offset 0.0)
        