yeah i know. i have been doing that for a while now, i'm just saying its kind of a hassle to delete the world you made then go in game fix it then re render the world in mine-imator plus what if you are like 90% Done and you want to change something and you have to delete the terrain? it just would be better and faster and it would save people like me a lot of time who change there mind a lot plus sometimes people change there mind how would that feel if you where almost done and you had to delete everything