If you check out the QQCodes at the bottom of the page, it will show you how to do hiders and a few other things. 

All you need to do for a hider is this(besides the - sign though)

[-hider=the title of the hider here]
The info within the hider here
[/hider]

Without the - sign, it will look like this

[hider=the title of the hider here]
The info within the hider here
[/hider]