This character is a Other Symbol and is mainly used in the Braille script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+280A forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
The Braille pattern dots-24 ( ⠊ ) is a 6-dot braille cell with the top right and middle left dots raised, or an 8-dot braille cell with the top right and upper-middle dots raised. It is represented by the Unicode code point U+280a, and in Braille ASCII with I.
Representations
System
Representation (click value to copy)
Nº
10250
UTF-8
E2 A0 8A
UTF-16
28 0A
UTF-32
00 00 28 0A
URL-Quoted
%E2%A0%8A
HTML hex reference
⠊
Wrong windows-1252 Mojibake
â Š
Encoding: GB18030 (hex bytes)
81 37 D6 34
RFC 5137
\u'280A'
Bash and Zsh inside echo -e
\u280A
C and C++
\u280A
C#
\u280A
CSS
\00280A
Excel
=UNICHAR(10250)
Go
\u280A
JavaScript
\u280A
Modern JavaScript since ES6
\u{280a}
JSON
\u280A
Java
\u280A
Lua
\u{280A}
Matlab
char(10250)
Perl
"\x{280A}"
PHP
\u{280a}
PostgreSQL
U&'\280A'
PowerShell
`u{280A}
Python
\u280A
Ruby
\u{280a}
Rust
\u{280a}
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