thanks for all and with which program can I open a save file and modify the data?Yes. No Problen.
Here, something with nice flowers.
View attachment 727827
Here, you see all variables, you can change in a save. Sort by number and name.
if you edit crazzy things, the save not work. But, this not destroy the game.
If you delete your own crazzy save, all is OK again. You see, you can nothing doing wrong.