Extbasic 3

[Yoddlet]

This is probably due to the fact that english isn't my primary language, but I really don't get it.
What particularly makes my head hurt is the "ANS", which to me is complete gibberish, and it shouldn't be.
The rest of that line doesn't really help either, tho. The strange part is that I got #4, no problem...

edit: Oh, never mind. I got it right, but I still don't get what ANS means...