HI, I have a stupid newbie question, but I can't find any answer on Google or CC3's help... drives me crazy.

So I'm using CC3 for my first overland map, creating a new world. How do I set up metrics?

I don't want an imperial system, but a metric one. I was able to set up a CC "unit" as a kilometer (I think I was), but various little things like the scale symbol still shows up as miles.

Another one, linked to that. When CC3 asks for the size of the new map (like 1000'×800' by default), does it matter since it's mostly vectors? If I create the Earth, do I really need to set that up as 22500×22600?

I'm sure I've missed something simple in the manual, but right now it's not helpful at all