If I had a leaflet that consisted of two sections folded longitudinally one on top of the other, I'd have a diptych. If there were three sections folded longitudinally, both side sections folding over the centre part, I'd have a triptych. But what I do have is a leaflet that is divided into four longitudinal panels, folded over each other in a zig-zag fashion. Is that called something like "quatriptych"? "Tetriptych"?

Marianna