I would like to use in a lot of documents the same title page and some settings in a way that when I want to implement a change to take effect in all of them.
One way that I thought is to place everything in a
newcommand having as an option the name of the document. But I don't think that this is the best way, as the code is quite a lot and it seems somewhat "wrong".
So my question is what is the best way to achieve that?