This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+2383 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
In typography, emphasis is the strengthening of words in a text with a font in a different style from the rest of the text, to highlight them. It is the equivalent of prosody stress in speech.
Representations
System
Representation (click value to copy)
Nº
9091
UTF-8
E2 8E 83
UTF-16
23 83
UTF-32
00 00 23 83
URL-Quoted
%E2%8E%83
HTML hex reference
⎃
Wrong windows-1252 Mojibake
⎃
Encoding: GB18030 (hex bytes)
81 36 F4 35
RFC 5137
\u'2383'
Bash and Zsh inside echo -e
\u2383
C and C++
\u2383
C#
\u2383
CSS
\002383
Excel
=UNICHAR(9091)
Go
\u2383
JavaScript
\u2383
Modern JavaScript since ES6
\u{2383}
JSON
\u2383
Java
\u2383
Lua
\u{2383}
Matlab
char(9091)
Perl
"\x{2383}"
PHP
\u{2383}
PostgreSQL
U&'\2383'
PowerShell
`u{2383}
Python
\u2383
Ruby
\u{2383}
Rust
\u{2383}
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