Hi,I just qualified as a 1K for the first timeI read that I get 6 x System Wide Upgrades (SWU's) as part of the deal.Can someone explain to me the terms & conditions of these? In particular, 1. What class of travel (eg Y, B, H.....) can I upgrade from?2. What's the cut off criteria that ends one upgrade & another must be used. For example, if my sectors were MEL/SYD/SFO/LHR with a stopover of > 24 hours in SFO, how many SWU's would I need?3. Using SWU's (as a 1K) , do I get greater upgrade rights (ie are more seats available for upgrade for 1K's using SWU's) than there are for premier Exec?Any other info/tips that you have would be very useful.Many thanks,john