Poetry has no monopoly on allusions and lots of books allude to other books. More importantly, Pratchett's wiki has the annotations that I'm interested in 1 and

Poetry has no monopoly on allusions and lots of books allude to other books. More importantly, Pratchett's wiki has the annotations that I'm interested in 1 and which could be useful outside of poetry. 1. example: https://www.lspace.org/books/apf/soul-music.html https://www.lspace.org/books/apf/soul-music.html