Modern Hebrew languages that it is genealogically a hybrid with Indo-European. These theories have not been met with general acceptance, and the consensus among a majority of scholars is that Modern Hebrew, despite non-Semitic influences, can correctly be classified as a Semitic language. Modern Hebrew is written from right to left using the Hebrew alphabet, which is an abjad, or consonant-only script of 22 letters based on the "square" letter form, known as "Ashurit" (Assyrian), which was developed from the Aramaic script. A cursive script is used in handwriting. When necessary, vowels are indicated by diacritic marks above or below the letters
Hebrew alphabet extent Modern Hebrew, vowels may be indicated. Today, the trend is toward full spelling with the weak letters acting as true vowels. When used to write Yiddish, vowels are indicated, using certain letters, either with niqqud diacritics (e.g. or ) or without (e.g. or ), except for Hebrew words, which in Yiddish are written in their Hebrew spelling. To preserve the proper vowel sounds, scholars developed several different sets of vocalization and diacritical symbols called "nequdot" (, literally "points"). One of these, the Tiberian system, eventually prevailed. Aaron ben Moses ben Asher, and his family for several generations, are credited