Just in time
Update: Lots here, of course. For now, just a couple of things. One - the Rokeah says matter-of-factly that Kitniyot are not eaten on Pesah because they contain wheat. Simcha speculates that this is because of crop-rotation.
The introduction discusses the other halakhic works of the Rokeah, especially his Maase Rokeah. Somewhere there I noticed the comment that "today, young men wear rings as jewelry".
The footnotes overflow with information about manuscripts, unpublished medieval works and interesting parallels.