The Arabic alphabet consists of 28 letters and is written from right to left. Each letter can have different forms depending on its position in a word: initial, medial, final, or isolated. The alphabet is used in several languages, including Arabic, Persian, and Urdu. Unlike the Latin alphabet, the Arabic script is primarily consonantal, with vowels often omitted in writing. Diacritical marks can be added to indicate short vowels and other phonetic features. The Arabic alphabet is essential for reading and writing in Arabic-speaking countries and is a key component of Islamic texts.