How can I use
pdflscape (or some other?) package in a twoside book so that landscape mode is always rotated so that top of the page points to the middle of the book? By default it seems landscape mode does not do that?
So I would like to have from time to time a page in a landscape mode, but it should be rotated correctly. This will probably make some landscape pages hard to read on a screen, as they will be flipped, but it would be much better printed.