OS Mk: SUB = manuscript
Old Syriac Gospels, text as per George A. Kiraz, Comparative Edition of the Syriac Gospels (Leiden, 1996
OS MkSin: Old Syriac Mark per MS Sinaiticus
Text as per George A. Kiraz, Comparative Edition of the Syriac Gospels,
Volume Two: Mark (Leiden: E.J. Brill, 1996).