> 3. If gen-pairs is "yes", then generate parameters for all 1-2, 1-3, and 1-4 pairs for which we did not already find parameters in step 1 or 2 (regardless of whether or not a [pairs] line exists for a particular pair). Or rather, generate an [exclusions] record for each 1-2 and 1-3, and a [pairs] record for each 1-4. Peter