rugal tree (FFT) in words</p></td>
      </tr><tr><td>
          <p><code><a href="fftrees_grow_fan.html">fftrees_grow_fan()</a></code> </p>
        </td>
        <td><p>Grow fast-and-frugal trees (FFTs) using the <code>fan</code> algorithms</p></td>
      </tr><tr><td>
          <p><code><a href="fftrees_ranktrees.html">fftrees_ranktrees()</a></code> </p>
        </td>
        <td><p>Rank FFTs by current goal</p></td>
      </tr><tr><td>
          <p><code><a href="fftrees_threshold_factor_grid.html">fftre