1## A plain header
2
3Let's first have a plain header
4
5An underlined header
6====================
7
8(That's also useful)
9
10# A header with a [link](http://www.link.com)
11
12First with a hash
13
14Another with a [link][a]
15------------------------
16This time underlined
17
18[a]: http://www.link.com/
19