Thanks for awnsering.
1. Is there a reason? Maybe there's some engine limitation with and "undo" functionality and can't be done, but getting out without saving?? I could want to blow an oil barrel to see where the fire spreads, then i can wipe the surface clean, but can't do anything about the barrel debree in the floor.
2. So... as game master i have no clue of what a crafting bible might teach.
I wan't to have some control over what do i want my players to know and when. Managing a crafting bible does not offer any help, in the description only says: "use to read and learn about crafting".