Ochlah Ve-Ochlah. edited from a manuscript discovered in the Bibliotheque Nationale, Paris, by F. Frensdorff

One of the earliest collections of Masoretic notes to the Bible text. The supreme Hebrew philologist Jonah ibn Janach (first half of the 11th century) considered Ochlah Ve-Ochlah to be the most important work on the subject. Indeed, most of the masoretic scholarship found in the 1524 Bomberg edition of the Bible was culled from this anonymous work. See EJ, Vol. XII col. 1353