Niqqud
In Hebrew orthography, niqqud or nikud (Hebrew: נִקּוּד, Modern: nikúd, Tiberian: niqqūḏ, 'dotting, pointing' or נְקֻדּוֹת, Modern: nekudót, Tiberian: nəquddōṯ, 'dots') is a system of diacritical signs used to represent vowels or distinguish between alternative pronunciations of letters of the Hebrew alphabet. Several such diacritical systems were developed in the Early Middle Ages.