Hyper-Learn?

Hi

I just can't find anywhere in N.E.D.'s online help nor in to the help topics into the forum, what exactly does this little button in the lower left corner of the tutorial's main window.
What is the "Hyper-Learn" function of N.E.D. in general? I can't guess what it's doing when I'm activating it.

Please, a clue someone?

Thank you in advance

Hyperlearn doubles the speed in which the Tutorial video is playing, which allows you to watch your Tutorial videos in half the time compared to normal playback speed.

I hope that explains it for you :)