This character is a Math Symbol and is commonly used, that is, in no specific script.
The glyph is a subscript version of the glyph Glyph for U+003DEquals Sign. 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+208C forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
Unicode has subscripted and superscripted versions of a number of characters including a full set of Arabic numerals. These characters allow any polynomial, chemical and certain other equations to be represented in plain text without using any form of markup like HTML or TeX.
The World Wide Web Consortium and the Unicode Consortium have made recommendations on the choice between using markup and using superscript and subscript characters:
When used in mathematical context (MathML) it is recommended to consistently use style markup for superscripts and subscripts […] However, when super and sub-scripts are to reflect semantic distinctions, it is easier to work with these meanings encoded in text rather than markup, for example, in phonetic or phonemic transcription.
Representations
System
Representation (click value to copy)
Nº
8332
UTF-8
E2 82 8C
UTF-16
20 8C
UTF-32
00 00 20 8C
URL-Quoted
%E2%82%8C
HTML hex reference
₌
Wrong windows-1252 Mojibake
₌
Encoding: GB18030 (hex bytes)
81 36 B0 30
AGL: Latin-5
equal.inferior
digraph
=s
RFC 5137
\u'208C'
Bash and Zsh inside echo -e
\u208C
C and C++
\u208C
C#
\u208C
CSS
\00208C
Excel
=UNICHAR(8332)
Go
\u208C
JavaScript
\u208C
Modern JavaScript since ES6
\u{208c}
JSON
\u208C
Java
\u208C
Lua
\u{208C}
Matlab
char(8332)
Perl
"\x{208C}"
PHP
\u{208c}
PostgreSQL
U&'\208C'
PowerShell
`u{208C}
Python
\u208C
Ruby
\u{208c}
Rust
\u{208c}
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