Hi, According to the Px-5S manual (and also the 350 manual, and maybe the rest of the Px's) there are 17 different temperaments available as options. This is interesting to me because I've been playing in Partch's version of "Just Intonation" for decades on other instruments, and it would be nice to be able to mach that on the keyboard. But the devil is in the details. I'll need to know exactly what changes have been made, at each chromatic step, to be sure. For instance, the "Pure Major" option might use traditional just intonation, but probably not (I've seen different definitions of it, and I don't know what Casio's is) -- so won't know unless I get a list of the 12 steps and either the ratios used by Casio, or the cents values away from Equal Temperament they use. So, anybody know -- is this information available anywhere, or is there a good person to ask in Casio? Thanks