The issue focused on a new way to use a new set of hand-crank-based "a-Z" or "0-9" call-and-response game-like test-sounds, to make a more direct, and in-person, test of a well-known and well-researched (M.A.C.B.A.B.A.B.A.B.A.B.A.B.A.B.A.B