Position relative to what?

[Romulator]

Ahh! Well, I was using Amnesia: The Dark Descent's Level Editor to get relative sizes

I haven't ever used Blender or anything similar to look at sizes, because I just place things on a map, not really into the model editting aspect :3

With that said, I would expect that xyz = 0 would be the exact centrepoint of the default cube which loads when you start a new project, at least globally. Locally however, it would probably be the centrepoint of any object.

Edit: This is what I mean: Setting the snap to 1.0, and putting it down on 0,0,0 on Amnesia's Level Editor gives you a 1m^2 of road (at least long ways ) Though it doesn't help much Blender wise, it does give a perspective of relative size in Amnesia. If you can import such model, you can get an idea of sizes Following the same formula, Amnesia's default walls are 4m long and 4m high.