The upper right-hand corner has baffled me. 5a Waldo author's basis for sauce... T?E?O??, and 8d Copy of Oedipus written up neat ??R?N. If 5a connects to 9a (PESTO) I'm still not seeing it. Of course I may have gotten one of the filled-in letters wrong (it wouldn't be the first time). Aargh! Please help!