Fog in Background model

[AbsolutePsycho]

I locally changed MainMenu3d.mdx and MainMenu3d_exp.mdx (screenshots are attached).
In ROC game menu it looks okay.
But in TFT menu it has annoying gray fog...

How to remove it?

I've seen possible solution here:
http://www.hiveworkshop.com/forums/...r-own-warcraft-3-background-51075/#post492506

ok i got it ...

Filter - remove fog << in model editor

Which model editor exactly was mentioned here?