Sébastien Vauban <address@hidden> writes:
#+TITLE: Main title \linebreak Subtitle
#+AUTHOR: Main author \linebreak Second one
DOES WORK. Thanks for your precious help!
I'm not sure to understand the subtle differences between `\\', `\newline' and
`\linebreak', though...
Me neither :)
I've found this, which might help:
http://www.personal.ceu.hu/tex/breaking.htm
Maybe \linebreak is less context-sensitive than \newline, which would
mean that there are more contexts (like \title and \author) in which
it behaves as expected. Just a guess.