This character is a Other Letter and is mainly used in the Telugu script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+0C3D forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
Avagraha (ऽ) is a symbol used to indicate prodelision of an अ(a) in many Indian languages like Sanskrit as shown below. It is usually transliterated with an apostrophe in Roman script and, in case of Devanagari, as in the Sanskrit philosophical expression शिवोऽहम्Śivo'ham (Śivaḥ aham), which is a sandhi of (शिवः + अहम्) ‘I am Shiva’. The avagraha is also used for prolonging vowel sounds in some languages, for example Hindi माँऽऽऽ! for ‘Mā̃ā̃ā̃ā̃!’ when calling to one's mother, or when transliterating foreign words in instant messaging: for example, 'cool' can be transliterated as कूऽल.
In the case of Hindi, the character is also sometimes used as a symbol to denote long or heavy syllables, in metrical poetry. For example, the syllables in the word छंदःchandaḥ ‘metre’ (in nominative) can be denoted as "ऽऽ", meaning two long syllables. (Cf. other notations in entry "Systems of scansion".)
Representations
System
Representation (click value to copy)
Nº
3133
UTF-8
E0 B0 BD
UTF-16
0C 3D
UTF-32
00 00 0C 3D
URL-Quoted
%E0%B0%BD
HTML hex reference
ఽ
Wrong windows-1252 Mojibake
à°½
Encoding: GB18030 (hex bytes)
81 32 A1 37
RFC 5137
\u'0C3D'
Bash and Zsh inside echo -e
\u0C3D
C and C++
\u0C3D
C#
\u0C3D
CSS
\000C3D
Excel
=UNICHAR(3133)
Go
\u0C3D
JavaScript
\u0C3D
Modern JavaScript since ES6
\u{c3d}
JSON
\u0C3D
Java
\u0C3D
Lua
\u{C3D}
Matlab
char(3133)
Perl
"\x{C3D}"
PHP
\u{c3d}
PostgreSQL
U&'\0C3D'
PowerShell
`u{C3D}
Python
\u0C3D
Ruby
\u{c3d}
Rust
\u{c3d}
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