This character is a Nonspacing Mark and inherits its script property from the preceding character. It is also used in the scripts Arabic, Syriac.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Nonspacing Mark. When changing direction it is not mirrored. U+064F prohibits a line break before it. The glyph can be confused with one other glyph.
The Wikipedia has the following information about this codepoint:
The Arabic script has numerous diacritics, which include consonant pointing known as iʻjām (إِعْجَام), and supplementary diacritics known as tashkīl (تَشْكِيل). The latter include the vowel marks termed ḥarakāt (حَرَكَات; sg. حَرَكَة, ḥarakah).
The Arabic script is a modified abjad, where short consonants and long vowels are represented by letters but short vowels and consonant length are not generally indicated in writing. Tashkīl is optional to represent missing vowels and consonant length. Modern Arabic is always written with the i‘jām—consonant pointing, but only religious texts, children's books and works for learners are written with the full tashkīl—vowel guides and consonant length. It is however not uncommon for authors to add diacritics to a word or letter when the grammatical case or the meaning is deemed otherwise ambiguous. In addition, classical works and historic documents rendered to the general public are often rendered with the full tashkīl, to compensate for the gap in understanding resulting from stylistic changes over the centuries.
Representations
System
Representation (click value to copy)
Nº
1615
UTF-8
D9 8F
UTF-16
06 4F
UTF-32
00 00 06 4F
URL-Quoted
%D9%8F
HTML hex reference
ُ
Wrong windows-1252 Mojibake
â—ŒÙ
Encoding: CP720 (hex bytes)
F5
Encoding: CP1256 (hex bytes)
F5
Encoding: GB18030 (hex bytes)
81 31 87 39
Encoding: ISO8859_6 (hex bytes)
EF
Adobe Glyph List
afii57455
Adobe Glyph List
dammaarabic
Adobe Glyph List
dammalowarabic
digraph
'+
RFC 5137
\u'064F'
Bash and Zsh inside echo -e
\u064F
C and C++
\u064F
C#
\u064F
CSS
\00064F
Excel
=UNICHAR(1615)
Go
\u064F
JavaScript
\u064F
Modern JavaScript since ES6
\u{64f}
JSON
\u064F
Java
\u064F
Lua
\u{64F}
Matlab
char(1615)
Perl
"\x{64F}"
PHP
\u{64f}
PostgreSQL
U&'\064F'
PowerShell
`u{64F}
Python
\u064F
Ruby
\u{64f}
Rust
\u{64f}
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