Masoretes
From the Hebrew ???????? ??????????? (ba'alei ha-masorah), 'Masters of the Tradition'. Refers to scholars in the 5th through 10th centuries CE who compiled a system of markings for biblical texts that would ensure the correct pronunciation and chanting of the text. The markings are inserted into the text in ways that do not change the length of the text. See Hebrew Alphabet, Trop (Cantillation).