number_6, Thanks for that. I actually live in MEL and was trying to see if I could get a couple of end of circut trips by starting in SYD. The originating country rule put paid to that.
I is good though that I can go from SWP to europe via HKG/SIN/BKK without using up my ASIA routings. (MR maximiser)
I may investigate starting in another continent. Of course, relative A/D/L ONE* costs are an issue.