I made it through the equation portion of level 7 (passed the What's in a name puzzle). After entering the hut I was advised that I needed to first collect the z key, which I had not yet done. I was told to go back, get the z key, and return.
Unfortunately now I am not able to get out of this area with the two key stroke limit. Any thoughts on how to either get out with 2 key strokes or how to disable the key stroke limit? I may have to restart the level if I cannot figure it out : /