This character is a Nonspacing Mark and is mainly used in the Bengali script. The character is also known as hasant (Bengali term for halant).
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+09CD prohibits a line break before it. The glyph can be confused with one other glyph.
The Wikipedia has the following information about this codepoint:
Virama (Sanskrit: विराम/हलन्त, romanized: virāma/halanta ्) is a Sanskrit phonological concept to suppress the inherent vowel that otherwise occurs with every consonant letter, commonly used as a generic term for a codepoint in Unicode, representing either
halanta, hasanta or explicit virāma, a diacritic in many Brahmic scripts, including the Devanagari and Bengali scripts, or
saṃyuktākṣara (Sanskrit: संयुक्ताक्षर) or implicit virama, a conjunct consonant or ligature.
Unicode schemes of scripts writing Mainland Southeast Asia languages, such as that of Burmese script and of Tibetan script, generally do not group the two functions together.
Representations
System
Representation (click value to copy)
Nº
2509
UTF-8
E0 A7 8D
UTF-16
09 CD
UTF-32
00 00 09 CD
URL-Quoted
%E0%A7%8D
HTML hex reference
্
Wrong windows-1252 Mojibake
â—Œà§
alias
hasant (Bengali term for halant)
Encoding: GB18030 (hex bytes)
81 31 E1 33
Adobe Glyph List
viramabengali
RFC 5137
\u'09CD'
Bash and Zsh inside echo -e
\u09CD
C and C++
\u09CD
C#
\u09CD
CSS
\0009CD
Excel
=UNICHAR(2509)
Go
\u09CD
JavaScript
\u09CD
Modern JavaScript since ES6
\u{9cd}
JSON
\u09CD
Java
\u09CD
Lua
\u{9CD}
Matlab
char(2509)
Perl
"\x{9CD}"
PHP
\u{9cd}
PostgreSQL
U&'\09CD'
PowerShell
`u{9CD}
Python
\u09CD
Ruby
\u{9cd}
Rust
\u{9cd}
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