Just in case you can't find it, here it is:
Starforge 2.2 SCM draft 2 (beta)With Starforge, you need to click on "isom" button if it doesn't say "Rect". With Starforge, you can make your own custom brushes and place almost any kind of terrain. (Plz correct me if I am wrong on that last one.) to see how to mess around with that feature, you should see
How to make 3D buildings. Also, I HIGHLY recommend making a copy of your map before you use Starforge.
With SCM draft, click on the "isometrical" drop down box, then click on "square" or "rectangle" or "tileset index".
EDIT: For grammer.
EDIT/ADDITION: (Correct me if I am wrong on this one plz) Hex editing is where you modify a computer file.