Cannot rotate bones.

Hello !

I am trying to get through the user manual, but for some reason some things do not work as supposed to:
I am now trying to animate Guz, this character:


I created a rig for him:


And now… For some reason I just don’t seem to be able to rotate his bones. Can you help me ?
Here is the .blend file if you want to take a closer look at my problem.

Anticipated thanks,
Marron.

http://oi61.tinypic.com/o76o37.jpg
You had this enabled… disable it.