I looked briefly but didn't see it - does Minecraft scripting have a way to save state and reset to that state instantly, how about stepping through code in rea

I looked briefly but didn't see it - does Minecraft scripting have a way to save state and reset to that state instantly, how about stepping through code in real time? If not, most programs are just macros - they simply mimic user-actions, and if somewhere along the script something doesn't go as planned, it's just a mess. It's really hard teaching 10 year olds how to do anything more than the basics if every time they run the program, their entire world is messed up, and there's no way to undo the script they just ran, or understand why it went wrong. This has been true in Minecraft for years now, it'd be great if it were addressed.