1-...Yes, I was aware of Flaps 2, talking to a real 737-200 captain he told me that he didn't even know why Boeing bother to put that setting.
2-...Well, Flaps 2 are totally useless and I think nobody in the world uses them.
Hey buddies... ok, flaps 2 can be useless during approach.
However, there're takeoff performance data for flaps 2 and 25 in the Boeing 737-200 Advanced Operations Manual. So, that's why those settings are there.
I've already used them....
