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+2317 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
Viewdata is a Videotex implementation. It is a type of information retrieval service in which a subscriber can access a remote database via a common carrier channel, request data and receive requested data on a video display over a separate channel. Samuel Fedida, who had the idea for Viewdata in 1968, was credited as inventor of the system which was developed while working for the British Post Office which was the operator of the national telephone system. The first prototype became operational in 1974. The access, request and reception are usually via common carrier broadcast channels. This is in contrast with teletext.
Representations
System
Representation (click value to copy)
Nº
8983
UTF-8
E2 8C 97
UTF-16
23 17
UTF-32
00 00 23 17
URL-Quoted
%E2%8C%97
HTML hex reference
⌗
Wrong windows-1252 Mojibake
⌗
Encoding: GB18030 (hex bytes)
81 36 E9 37
RFC 5137
\u'2317'
Bash and Zsh inside echo -e
\u2317
C and C++
\u2317
C#
\u2317
CSS
\002317
Excel
=UNICHAR(8983)
Go
\u2317
JavaScript
\u2317
Modern JavaScript since ES6
\u{2317}
JSON
\u2317
Java
\u2317
Lua
\u{2317}
Matlab
char(8983)
Perl
"\x{2317}"
PHP
\u{2317}
PostgreSQL
U&'\2317'
PowerShell
`u{2317}
Python
\u2317
Ruby
\u{2317}
Rust
\u{2317}
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