Differentiae are written on staff-lines at the end of each antiphon, accompanied by "Euouae" or the textual incipit of the psalm. In the original Cantus index, differentiae were ascribed a two-digit code, with the number distinguishing between differentiae in a mode, and a lower-case letter distinguishing variations of similar differentiae (e.g., 1a, 1b, 2a, 2b, etc.). The manuscript also includes a tonary (ff. 285v-286v).
Downey, Charles, and Joseph Metzinger. Inventory of Vorau, Stiftsbibliothek, 287 (olim XXIX). In: Cantus: A Database for Latin Ecclesiastical Chant: Inventories of Chant Sources. Directed by Debra Lacoste (2011-), Terence Bailey (1997-2010), and Ruth Steiner (1987-1996). Web developer, Jan Kolácek (2011-).
Standardized manuscript tonary completed by Rebecca Shaw (Dalhousie University) on March 18, 2018. Edited by Jennifer Bain, Sister Ilaria Culshaw, Lucia Denk, Brayden Olson, and Rebecca Shaw (Dalhousie University) on June 18, 2019.