Typically, we would want (1) More EQM, (2) Lower price, (3) Stopovers for those with travel instinct. I am seeking the opinion of the masters here on how certain kind of fare rules can best be exploited for these purposes: (1) Stopovers permitted. OK, this one is obvious. (2) Add-on fares permitted. This allows us to add 3x and lower price. Anything else? (3) End-on-end. What is this good for? (4) Surface sectors permitted. What is this good for, besides seeing an extra city? Any other components of fare rules that are exceptionally useful?