Beneventan notation was used in the area corresponding roughly to the duchy of Benevento and its area of influence (including Benevento, Monte Cassino, Bari and the Dalmatian coast); it thus covered much the same territory as Beneventan literary script....The virga has a graphic stress on the left. There are two types of punctum, one horizontal, the other slanting (planum/grave). The clivis also has two forms, one pointed (when approached from a lower note), the other right-angled (approached from the unison or a higher note). The scandicus is conjunct. The meaning of tractuli joined by a thin diagonal stroke is unclear (‘inflatilia’ with two notes, ‘gradata’ with three). Compound neumes, where long chains of notes are formed without lifting the pen from the parchment, are also prominent. The relative diastematy of this notation later developed towards an increasingly exact pitch-notation (the custos was used even before the introduction of the staff).
Bent, Ian D., David W. Hughes, Robert C. Provine, Richard Rastall, Anne Kilmer, David Hiley, Janka Szendrei, Thomas B. Payne, Margaret Bent, and Geoffrey Chew. 2001 "Notation." Grove Music Online. January 20, 2001. Updated and revised July 1, 2014.