I'm trying to print a full-sized helmet model. (ie. big enough to wear on my head.) I've placed Support in most of the places that will need it, but there's one area that has an internal window cut out to see out of. It will need Support under it, as the geometry at the top of the window is not a straight line, and trying to draw angles above empty air will never work:

But no matter what I do, I'm not able to place a support pillar on top of the bottom of the window to reach up to the top of it and support the model there. How do I do that?