This character is a Other Punctuation and is commonly used, that is, in no specific script.
The glyph is a small version of the glyph Semicolon. Its East Asian Width is wide. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. It will not end a sentence. U+FE54 prohibits line breaks before its position. There might be some exceptions, though.
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
65108
UTF-8
EF B9 94
UTF-16
FE 54
UTF-32
00 00 FE 54
URL-Quoted
%EF%B9%94
HTML hex reference
﹔
Wrong windows-1252 Mojibake
ï¹”
Encoding: BIG5 (hex bytes)
A1 51
Encoding: BIG5HKSCS (hex bytes)
A1 51
Encoding: CP950 (hex bytes)
A1 51
Encoding: GBK (hex bytes)
A9 72
Encoding: GB18030 (hex bytes)
A9 72
Adobe Glyph List
semicolonsmall
RFC 5137
\u'FE54'
Bash and Zsh inside echo -e
\uFE54
C and C++
\uFE54
C#
\uFE54
CSS
\00FE54
Excel
=UNICHAR(65108)
Go
\uFE54
JavaScript
\uFE54
Modern JavaScript since ES6
\u{fe54}
JSON
\uFE54
Java
\uFE54
Lua
\u{FE54}
Matlab
char(65108)
Perl
"\x{FE54}"
PHP
\u{fe54}
PostgreSQL
U&'\FE54'
PowerShell
`u{FE54}
Python
\uFE54
Ruby
\u{fe54}
Rust
\u{fe54}
Click the star button next to each label to set this representation as favorite or remove it from the favorites. Favorites will be shown initially. (Favorites are stored locally on your computer and never sent over the internet.)