paraph
A flourish made after or below one's signature, originally to prevent forgery.
A mark used by medieval rubricators to indicate textual division.
Commencing with a C-shaped paraph-sign in the same brown ink, the glosses are linked to their corresponding passages by alphabetic signs comprising single letters in a sequence beginning with a in each margin, moving on to b, c, and d down the page, and, ideally, linking with the same letter in the adjacent column. Such a pairing allows for matching the gloss with the specific location in the text where its comment should be considered.
Where it comes from
Inherited from Middle English paraf, from Medieval Latin paraffus or its etymon Middle French paraphe, paraffe, shortening of paragraphe, from Ancient Greek παράγραφος (parágraphos).
Adapted from the Wiktionary entry paraph (CC BY-SA 4.0).