This character is a Format 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 Boundary Neutral. When changing direction it is not mirrored. U+E007F prohibits a line break before it.
The Wikipedia has the following information about this codepoint:
Tags is a Unicode block containing formatting tag characters. The block is designed to mirror ASCII. It was originally intended for language tags, but has now been repurposed as emoji modifiers, specifically for region flags.
Representations
System
Representation (click value to copy)
Nº
917631
UTF-8
F3 A0 81 BF
UTF-16
DB 40 DC 7F
UTF-32
00 0E 00 7F
URL-Quoted
%F3%A0%81%BF
HTML hex reference
󠁿
Wrong windows-1252 Mojibake
ó ¿
Encoding: GB18030 (hex bytes)
D3 36 A2 35
RFC 5137
\u'E007F'
Bash and Zsh inside echo -e
\U000E007F
C and C++
\U000E007F
C#
\U000E007F
CSS
\0E007F
Excel
=UNICHAR(917631)
Go
\U000E007F
JavaScript
\uDB40\uDC7F
Modern JavaScript since ES6
\u{e007f}
JSON
\uDB40\uDC7F
Java
\uDB40\uDC7F
Lua
\u{E007F}
Matlab
char(917631)
Perl
"\x{E007F}"
PHP
\u{e007f}
PostgreSQL
U&'\+0E007F'
PowerShell
`u{E007F}
Python
\U000E007F
Ruby
\u{e007f}
Rust
\u{e007f}
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