With a bit of digging around on aoidoi though I did find the reference.

Thanks for the lead, Bingley. With a bit of digging around on aoidoi, I found this:

"The study of Greek meter exercises a great power of seduction over some scholars. You can find recently published books entirely on this topic and which devote an entire page to a schematic rendering of some tricky bit of Pindar. .... it's not clear to me how long I'll have to study before the notation "cretic + link anceps + hemiepes + final anceps" is going to mean much to me without a great deal of thought. .... "

It's greek to me.