This character is a Other Punctuation and is commonly used, that is, in no specific script. It is also used in the scripts Adlam, Arabic.
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+204F forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
The semicolon; (or semi-colon) is a symbol commonly used as orthographic punctuation. In the English language, a semicolon is most commonly used to link (in a single sentence) two independent clauses that are closely related in thought, such as when restating the preceding idea with a different expression. When a semicolon joins two or more ideas in one sentence, those ideas are then given equal rank. Semicolons can also be used in place of commas to separate items in a list, particularly when the elements of the list themselves have embedded commas.
The semicolon is one of the least understood of the standard marks, and is not frequently used by many English speakers.
In the QWERTY keyboard layout, the semicolon resides in the unshifted homerow beneath the little finger of the right hand and has become widely used in programming languages as a statement separator or terminator.
Representations
System
Representation (click value to copy)
Nº
8271
UTF-8
E2 81 8F
UTF-16
20 4F
UTF-32
00 00 20 4F
URL-Quoted
%E2%81%8F
HTML hex reference
⁏
Wrong windows-1252 Mojibake
â
HTML named entity
⁏
Encoding: GB18030 (hex bytes)
81 36 A9 39
RFC 5137
\u'204F'
Bash and Zsh inside echo -e
\u204F
C and C++
\u204F
C#
\u204F
CSS
\00204F
Excel
=UNICHAR(8271)
Go
\u204F
JavaScript
\u204F
Modern JavaScript since ES6
\u{204f}
JSON
\u204F
Java
\u204F
Lua
\u{204F}
Matlab
char(8271)
Perl
"\x{204F}"
PHP
\u{204f}
PostgreSQL
U&'\204F'
PowerShell
`u{204F}
Python
\u204F
Ruby
\u{204f}
Rust
\u{204f}
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