Maas comments further that "A dictation revised by the author must be regarded as equivalent to an autograph manuscript". The lack of autograph manuscripts applies to many cultures other than Greek and Roman. In such a situation, a key objective becomes the identification of the first exemplar before any split in the tradition. That exemplar is known as the archetype. "If we succeed in establishing the text of [the archetype], the constitutio (reconstruction of the original) is considerably advanced.