Thanks! Press S to use the power from the marble you get right before that section!
Gotcha! I don't think is says that in-game? I just played it again and don't see it.
Edit: Oh wait, I see it now! The text blends in with the yellow below it, so it's hard to see.
So I got further, but now I can't figure out the level with the marble that shows a visible platform rectangle and a dotted line one. I took the marble, and all of the platforms disappeared? How do you beat this level? T_T
While you have the platform marble, certain platforms appear! If you vault that marble, they disappear.
