i had a problem , wich is the city is snowing and it cannot be removed or disabled or anything , i tried to use commands to stop it but it doesnt work , and finally i know right now why . the data.grf is the problem , i tried to exchange it with KRO data.grf and it works " no snowy " but i cant keep it , because there's alot of errors it didnt match with mine data , so can i edit my data.grf by using grf editor and remove this effect ?