Undo just part of your code

[yellowLight236]

I'll explain my idea with an example. I think this is the best way:
I have a file with 5 code instructions like this:

instruction 1 ...
instruction 2 ...
instruction 3 ...
instruction 4 ...
instruction 5 ...

I execute three actions on my file which has 5 instructions

• action 1: I modify instruction 2
• action 2: I modify instruction 4
• action 3: I modify instruction 1

If I just want to undo action 1 with "Ctrl + z", that means I'll lose actions 2 and 3. So the idea is, can you make functionality that allows us to select just one part of the code (in this example instruction 1) to cancel without affecting the other instructions done before.