Statmodding is the act of modding your stats through manually changing your paragon points spent in different stats.
1. Make a Toon, and get some paraon on it. go through all your paragon stats and spend 1 point on everything.
2. Export to editor. Change its class to a different class with a different mainstat.
3. Load the save and spend 1 point in mainstat again.
4. Repeat this till you have points spent in every stat and all 3 mainstats aswell (INT, STR, DEX)
5. Now, once youve done that, open your save up again in the editor.
6. Go to the tab for your Toon, and change it back to the class you want it to be.
7. You'll notice on the main tab for your toon, there will be a box that's titled "Unknown". Click it.
8. This should drop down a menu where you can manually set all of your points in each stat.
9. And thats it. Play arround with the numbers and have fun. :)
Keep in mind, these are 32bit integers. so the max and min values are as follows:
MAX: 2,147,483,647
MIN: -2,147,483,648