Ubuntu Help: not accessible by pressing F1 key
As per MC Return (mc-return) suggestion
I noticed that when I am at the desktop (Unity), there are many ways of accessing the Ubuntu Help (aka Ubuntu Desktop Guide)
...but: I wasn't able to access it by pressing the F1 key.
Also, nothing happened when I pressed the F1 key so I am guessing this is something that should be easily added to 13.04.