Did you ever had loads of time to wait, as well as numerous Energy Crystals to spare, but couldn't get yourself to flat that giant mountain over there?
Don't have nukes at hands, as well?
Now, just use this Flatificator program for the Terraformer. It will fastly eradicate all natural blocks ABOVE the height level of the placed terraformer.
It cannot remove stone or man-made materials, though.
As well, it will fill all areas below the Terraformers height level with simple dirt. Means, it can flatificate BOTH WAYS, HAYO!