I am going to post the things I have found here that can be done with this editor.
Under the Raw tab BlackMarketUpgrades is where you can upgrade your ammo capacity. Make sure you have already bought all SDU's or it won't work properly. You should have 9 rows total of 99999.
Under the Raw tab ResourceData is where you can set how much ammo you have on hand without having to buy it.
This basically gives Unlimited ammo.
Remove unwanted skill points by setting these values to 0 and make sure you skill tree is filled before removing unwanted points.
This is how to extract the code for weapons like BL2(B3gvqgprtICUCbFUsaqcfKkbn9KI2tV46DZk7iEASzo=) which can be used in the paste code button.
Right click the weapon/item and choose copy code. You can also duplicate and delete items here.
To use the pastecode button you must have the copied code you want and click pastecode which adds the item to your inventory.
I will add to this as I find more things that are useful.