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+237D forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
In word processing and digital typesetting, a non-breaking space (), also called NBSP, required space, hard space, or fixed space (in most typefaces, it is not of fixed width), is a space character that prevents an automatic line break at its position. In some formats, including HTML, it also prevents consecutive whitespace characters from collapsing into a single space. Non-breaking space characters with other widths also exist.
Representations
System
Representation (click value to copy)
Nº
9085
UTF-8
E2 8D BD
UTF-16
23 7D
UTF-32
00 00 23 7D
URL-Quoted
%E2%8D%BD
HTML hex reference
⍽
Wrong windows-1252 Mojibake
â½
Encoding: GB18030 (hex bytes)
81 36 F3 39
RFC 5137
\u'237D'
Bash and Zsh inside echo -e
\u237D
C and C++
\u237D
C#
\u237D
CSS
\00237D
Excel
=UNICHAR(9085)
Go
\u237D
JavaScript
\u237D
Modern JavaScript since ES6
\u{237d}
JSON
\u237D
Java
\u237D
Lua
\u{237D}
Matlab
char(9085)
Perl
"\x{237D}"
PHP
\u{237d}
PostgreSQL
U&'\237D'
PowerShell
`u{237D}
Python
\u237D
Ruby
\u{237d}
Rust
\u{237d}
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