Thanks for that info, Jeff. Like Peggy, doesn't seem logical that that would change the orientation of the 2nd page, but, the spread sheets I've wanted 2-sided have been landscape orientation, and that is binding on the short side. So I just created a 2 page spread, portrait, and it prints correctly; it automatically selects long-edge, But the puzzlement is: the computer knows it is either portrait or landscape. Seems that it should automatically select short edge binding when the document is landscape. Seems like a bug to me, but knowing that, easily worked around.
Thanks agin.