As of Unicode 9.0, the Arabic script is contained in the following blocks:
Contents
- Contextual forms
- Punctuation and ornaments
- Word ligatures
- Arabic Presentation Forms A
- Arabic Presentation Forms B
- References
The basic Arabic range encodes the standard letters and diacritics, but does not encode contextual forms (U+0621–U+0652 being directly based on ISO 8859-6); and also includes the most common diacritics and Arabic-Indic digits. The Arabic Supplement range encodes letter variants mostly used for writing African (non-Arabic) languages. The Arabic Extended-A range encodes additional Qur'anic annotations and letter variants used for various non-Arabic languages. The Arabic Presentation Forms-A range encodes contextual forms and ligatures of letter variants needed for Persian, Urdu, Sindhi and Central Asian languages. The Arabic Presentation Forms-B range encodes spacing forms of Arabic diacritics, and more contextual letter forms. The presentation forms are present only for compatibility with older standards, and are not currently needed for coding text. The Arabic Mathematical Alphabetical Symbols block encodes characters used in Arabic mathematical expressions.
Contextual forms
A demonstration for the basic alphabet used in Modern Standard Arabic:
Punctuation and ornaments
Only the Arabic question mark ⟨؟⟩ and the Arabic comma ⟨،⟩ are used in regular Arabic script typing and the comma is often substituted for the Latin script comma (,).
Word ligatures
Arabic Presentation Forms-A has a few characters defined as "word ligatures" for terms frequently used in formulaic expressions in Arabic. They are rarely used out of professional liturgical typing, also the Rial grapheme is normally written fully, not by the ligature.
Arabic Presentation Forms A
They are mostly ligatures which can be created from the previous charts' characters, with the exception of the bracket-like graphemes ﴾ ﴿ and some of them are ligatures of common liturgical phrases.
Arabic Presentation Forms B
These can all be created from the basic chart's characters.