dcrochu's version as of 16nov2022 + rsigns + <eu> tag + <sp>*</sp>

Better convention for peS rsigns : f_g because occurrences of pe- will require fg_

Fixed differentia : this EUOUAE (carried over from Sandhofe, but Turco has the same) is referenced as 1g3 in recent Solesmes books

Le pes SOL-LA, à « præVAleat » est à remplacer par le pes FA-SOL

Gregofacsimil avec NABC

From 1916 LN draft, with a correction that made it into the 1922 OMH ed.typ.

Somehow this A/ is given as 1g in the Vaticana draft and the 1922 OMH ed.typ, but as 1g3 in Turco etc.