dcrochu as of 26/02/2025 plus rsigns and the following changes: removed "Domino", adapting the melody according to the franciscan mss; changed Offerentur to Afferentur, following BR, because we cannot justify not following BR, as the change is trivial; changed the beginning of the altera pars and the punctuation to reflect the structure found in BR.

TODO make sure that both Afferentur and Offerentur are indexed in the book.

syllabisation: re/gna.