The "variation" feature mentioned is a mistake as it is only available in the original version of Chess Mentor found at www.chessmentor.com
I have now since removed this text from the demo lesson as it does not apply to the web version of Chess Mentor.
in the demo008, at the end it said your welcome to try the variations mentioned before, well i accidently clicked continue. So i went back and just pressed show answer etc, 18% score, kk and then i read it and it said the variation button "above the board". i can't find it, so its there anything wrong?