How to i look at my raw sub files?

i want to cut out a certain part of my .sub file, but i dont know what program to use

Hi, a .sub file is basically a text file, so you can open it with any text-editor to look inside.
Cutting it’s no so simple as you must analyze all the value inside and then remove the ones you do not care.

I wrote a tool in python to make (my) life easier that I use to plot and cut sub files. If you want to take a look I published everything on my git : GitHub - cberetta/flipperzero_scripts: Some scripts and tool for FlipperZero

Hope it could help.