>> are faces just like geometry planes?
Yes. Exactly.
>> is 1 unit down (or up) say (0,0,0) to (1,0,0)
In binedit (x,y,z) is correctly (horizontal, vertical, depth). So, up or down would be (0,0,0) to (0,1,0)
>> the same as a unit terrain wise in traxx?
Traxx doesn't really use the binedit scale. Traxx and the game measure things in feet. The preferred scale in binedit is units - because it allows more precision. However, 256 units = 1 foot so the proportions are easy to work with. Uusally you build something so that it's proportions are correct to itself, then you can resize for the game/traxx.
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