A more thorough explanation:

CONSUETUDINARIUS

Consuetudinarius is a book that contains the customs and practices of abbeys and monasteries. It is a term used in historical ecclesiastical law.

An example of a consuetudinarius would be a book that outlines the daily prayers and rituals of a particular monastery. Another example would be a book that details the specific clothing and behavior expected of monks or nuns within a certain religious order.

These examples illustrate how a consuetudinarius was used to preserve the traditions and customs of religious communities. By recording these practices in a book, they could be passed down from generation to generation and maintained over time.