Can be set to 'yes' or 'no' and determines if this country should own any walls that it places near its buildings. This is a little buggy, but because walls are converted to overlay types instead of structures when placed on the map (but they still form an obstruction) telling the computer that it owns them is supposed to stop it destroying them the moment they are built. It will still destroy them if they pose an obstruction to normal movement (especially if the moving unit is in a hunt or attack mission).
- Note to whoever rewrites this: DZ's guide has this bit once in rules2 and once in maps1, both times under [Countries], only difference being that he uses "this country" in maps1, and "this house" in rules2.
