Hebrew alphabet written from right to left. It has 22 letters, five of which use different forms at the end of a word. In the traditional form, vowels are indicated by the weak consonants Aleph (), He (), Vav (), or Yodh () serving as vowel letters, or "matres lectionis": the letter is combined with a previous vowel and becomes silent, or by imitation of such cases in the spelling of other forms. Also, a system of vowel points to indicate vowels (diacritics), called niqqud, was developed. In modern forms of the alphabet, as in the case of Yiddish and to some
Hebrew alphabet always represented by pe in its regular, not final, form "פ", even when in final word position, which occurs with loanwords (e.g. שׁוֹפּ ""shop""), foreign names (e.g. פִילִיפּ ""Philip"") and some slang (e.g. חָרַפּ ""slept deeply""). The letters of the Hebrew alphabet have played varied roles in Jewish religious literature over the centuries, primarily in mystical texts. Some sources in classical rabbinical literature seem to acknowledge the historical provenance of the currently used Hebrew alphabet and deal with them as a mundane subject (the Jerusalem Talmud, for example, records that "the Israelites took for themselves square calligraphy", and that the