Ok, LIST works and is fine.
I saw that link color is through CSS (here on flarum it is modifyied and not as the downloadable version).
Still wondering how to size up text...
[size=+1]doesn't work[/size]
But as you can see in this post: http://discuss.flarum.org/d/987-flarum-v0-1-0-beta-2-released , toby inserts h2 and h3.
I'm able to hard code whatever I want, but I would love to implement content only through extensions and not making a modifyied version...