   start of recession (higher = later recession start), default = 0.925</span>
0018 <span class="comment">%   plot_results: whether to plot results, default = false</span>
0019 <span class="comment">%</span>
0020 <span class="comment">%   OUTPUT</span>
0021 <span class="comment">%   flow_section: n-by-2 array where n is the number of recession segments;</span>
0022 <span class="comment">%       columns are the indices into the flow array of the start and end of</span>
0023 <span class="comment">%       the 