OK in lesson ADT078 their is a referance to see the actual variation that Steinez played.  I have not been able to see how to get to see the variations.

Ok, lesson ADT078 has been fixed. If you see anymore lessons which talk about "variations" please do report this so that we can fix it.

Hmmm, I've just been through lesson ADT078, and there is a mention about a "variation" after 2...Bxf4+

I understand the ideas, and I saw most of the variations, but I'm not sure about the fix ?!

Yes, you are right. Now it has been fixed.