Hi. I want to mod a trait so that the civ gets an extra shield per tile. However none of the elements in the Civ4TraitInfos file seem to do this. The ExtraYieldThresholds element gives n shields per shield, not per tile. The TradeYieldModifiers element looks like it's supposed to add shields per city, but I can't seem to get that to work, although I get no errors. But what I really want is to add shields per tile the way certain buildings do. I'm thinking unfortunately this may require adding an element to traits, which I haven't the faintest idea how to do. I also thought of giving the civ a unique building that would give the bonus and be built automatically in every city as a workaround. I don't really know how to do that either though. Could one of you civ gurus help me out?