The MPAA logo appears in the end credits, but the film's rating is still unknown.
Barbara Gordon:
You don't need to put somebody under for a blood transfusion!
Barbara Gordon:
It's *more* than that, isn't it?
Robin shoots Barbara a line at the top of the oil tank, and the next time we see her, she has a pipe in her hands, which she uses to slide down the line, before it snaps and she falls to the ground. Where did the perfect pipe come from?