Yeah but lets say I wanted trip 1 real bad but 2 & 3 were fillers. I could Go H1, S2A,3A. This would indicate that 1 is a hard choice and 2 and 3 are just fillers. The A after 2 & 3 would say fill with any trip that fits the same footprint (if available). If 1 is not available they would have to go to my next line.