I pre-apologize for any stupid questions here. I'm still very beginner in LaTeX and trying to learn how to use it efficiently.
I have certain commands and basic setup that I use for all the documents I write. It includes ams symbol, tikz-cd setting, font setting and many personal commands that I use (like \Q for rational number). However, I change them sometimes and I wish that change goes into all of my documents uniformly.
So here is what I think, if I write these setup in one document and modify it whenever necessary, can I bring this to other documents using something like \bring{mysetup}? Or do you just copy & paste your format all the time whenever you write a new one?
Thanks in advance.