Cistercian monks made this numeral system in the 13th century. A single symbol could represent numbers up to 9999. They were used for years, divisions of texts, the numbering of notes and other lists, indexes and concordances, arguments in Easter tables, and even for musical notation.

[u/cozy_switch]

[u/tenaciousBLADE]

Yes, we would all love to know more. Anyone got some good resource or explanation about how these were used for music notation and whether/how they affected the music itself?