I tried to search, but of course Z and C are too small "words" to search for. My question is, are these exactly the same as digital versions of L and R? I hear some games treat them as extra buttons, making a total of 8 individual button functions? How true is that, and if so, what games? If that is the case, why is it not documented and why are there no official Sega controllers that have Z, C AND L and R buttons?