Okay; "subtext" means The implicit meaning or theme of a literary text. In other words, what's she talking about, right?
Sounds like a dictionary to me. No, no, wait--it has to be a rhyme. "Numerical sprites"--sounds like footnote indicators... ?? Oh! The Bible? Agh, that's not a rhyme either. Though parts of it are songs or poems...The Song of Solomon, perhaps?