This character is a Other Punctuation 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. U+2E0E offers a line break opportunity after its position.
The Wikipedia has the following information about this codepoint:
A coronis (Ancient Greek: κορωνίς, korōnís, pl. κορωνίδες, korōnídes) is a textual symbol found in ancient Greek papyri that was used to mark the end of an entire work or of a major section in poetic and prose texts. The coronis was generally placed in the left-hand margin of the text and was often accompanied by a paragraphos or a forked paragraphos (diple obelismene).
The coronis is encoded by Unicode as part of the Supplemental Punctuation block, at U+2E0E⸎EDITORIAL CORONIS.
Representations
System
Representation (click value to copy)
Nº
11790
UTF-8
E2 B8 8E
UTF-16
2E 0E
UTF-32
00 00 2E 0E
URL-Quoted
%E2%B8%8E
HTML hex reference
⸎
Wrong windows-1252 Mojibake
⸎
Encoding: GB18030 (hex bytes)
81 38 F2 34
RFC 5137
\u'2E0E'
Bash and Zsh inside echo -e
\u2E0E
C and C++
\u2E0E
C#
\u2E0E
CSS
\002E0E
Excel
=UNICHAR(11790)
Go
\u2E0E
JavaScript
\u2E0E
Modern JavaScript since ES6
\u{2e0e}
JSON
\u2E0E
Java
\u2E0E
Lua
\u{2E0E}
Matlab
char(11790)
Perl
"\x{2E0E}"
PHP
\u{2e0e}
PostgreSQL
U&'\2E0E'
PowerShell
`u{2E0E}
Python
\u2E0E
Ruby
\u{2e0e}
Rust
\u{2e0e}
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