1
The transmitted ninth book is a dossier made from already existing Sibylline material rather than an independent composition.
2
It repeats passages from Books 1-8, includes the whole short Book VI, contains one verse not otherwise preserved in Books 1-8, and then reproduces Book VIII 218-428.
3
HaSefarim therefore records the unit fully as a transmission fact but does not duplicate hundreds of pages and falsely present repetition as new revelation.
4
The unique verse is retained in the critical apparatus when securely identifiable. Book X - Transmission Dossier - The Duplicate of Book Four Book Ten is textually the same as Book IV in the Omega transmission.