Canard helps generate and structure complex alternatives in a possibility table. Figure 27 shows a Canard possibility table for a portion of a network design problem. The thick horizontal line is a partial solution path linking component alternatives. Shaded cells show hard and soft constraints associated with the path. The left-most column shows classes of solutions associated with paths.
Repertory grid reasoning methods help rank the components in a column.
Automated methods combine ranking information with constraints to produce a set of best possible solutions.