Gregofacsimil + neumes from H + rsigns according to H. Synthetic verse, structure as found in Plantin and Sandhofe. Weird that this V/ does not exist in the mss.

cf. pull request: https://github.com/Nocturnale-Romanum/nocturnale-romanum/pull/195

adopt the flat at pectoRE, adopt augm.liq on Igne (+fixed wrong NABC from dcrochu there), adopt quarterbar after manibus