The international standard ISO 233 establishes a system for romanization of Arabic and Syriac. It was supplemented by ISO 233-2 in 1993. 1984 edition The table below shows the consonants for the Arabic language. ISO 233-2:1993 ISO 233-2:1993 is an ISO schema for the simplified transliteration of Arabic characters into Roman characters. This transliteration system was adopted as an amendment to ISO 233:1984. It is used mainly in library context, and was introduced because ISO 233 was not meeting the indexing purposes, which are essential for the consistency of library catalogs. According to ISO 233-2(1993), Arabic words are vocalized prior to romanization. ISO 233-2 is used in French libraries and in North African libraries, and is recommended by ISSN for establishing key titles when cataloguing serials. ISO 233-3:1999 ISO 233-3:1999 is dedicated to "Persian language – Simplified transliteration". ISO/R 233:1961 ISO/R 233 is an earlier standard that has been withdrawn. See also Arabic transliteration DIN 31635 List of ISO transliterations External links Transliteration of Non-Roman Scripts -A collection of writing systems and transliteration tables, by Thomas T. Pedersen. PDF reference charts include ISO 233. ISO 233:1984 ISO 233-2:1993 ISO 233-3:1999 References 00233 00233 Romanization of Arabic Syriac language Syriac alphabet Neo-Aramaic languages Semitic writing systems