Two questions I couldn' find an answer for with a quick forum search: 1. Is there a good free file comparing tool, which can show me somehow, what is different in two distinct text files? 2. Is there a way to prevent a city building from showing up visible on the map? I mean sometimes it should be visible and under some conditions it shouldn't. I was searching a switch in the SDK to do it, but couldn't find it. I wouldn't like to have to create a second identical xml building just without art. Thx for any help.