R. v. Girimonte,  O.J. No. 4961 (O.C.A.):
38. The fact that the preliminary inquiry may serve the discovery
interests of the defence does not alter the purpose of the preliminary
inquiry or the singular nature of the justice's function at the preliminary
inquiry…In my view, discovery is an incidental benefit to the
defence flowing from a process which requires the Crown to establish
a case for committal for trial..."