LaTeX.org

I finally found myself what was causing the problem.
It seems that, if I add the a3paper option in documentclass, and then when I load the package geometry, it crash and produce error. While if I just put in the geometry package, it works alright.
The only problem now is to manage to have the toc ...

I am sorry if my understanding of what a MWE is was wrong.
I'm not sure using the multicol package will work fine, as it says in the website
Multicol patches the output routine, and may clash with other packages that do the same (e.g., longtable);
I'm using already longtable (that's why I ...

Hello there,
I'm having a problem changing a document I started as an a4paper to an a3paper with 2 columns. It seems there is a problem using the titlepage function and some things dont work fine (like the lipsum package). I attach a MWE with all the packages I was using
Thank you for your time and ...

Thank you Stefan_K,
It is what I was looking for. It works perfectly
Jose A

I'm writing a document, which structure I want to be the following:
Part I
Chap 1
Chap 2
....
Appendices
Appendix 1
Appendix 2

This document is not in English, though, but I have no problem to change Appendix or Appendices by the required word. However, I'm not able to change the Alph numbering by ...