This character is a Other Symbol 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. The word that U+23BC forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
A scan line (also scanline) is one line, or row, in a raster scanning pattern, such as a line of video on a cathode ray tube (CRT) display of a television set or computer monitor.
On CRT screens the horizontal scan lines are visually discernible, even when viewed from a distance, as alternating colored lines and black lines, especially when a progressive scan signal with below maximum vertical resolution is displayed. This is sometimes used today as a visual effect in computer graphics.
The term is used, by analogy, for a single row of pixels in a raster graphics image.
Scan lines are important in representations of image data, because many image file formats have special rules for data at the end of a scan line. For example, there may be a rule that each scan line starts on a particular boundary (such as a byte or word; see for example BMP file format). This means that even otherwise compatible raster data may need to be analyzed at the level of scan lines in order to convert between formats.
Representations
System
Representation (click value to copy)
Nº
9148
UTF-8
E2 8E BC
UTF-16
23 BC
UTF-32
00 00 23 BC
URL-Quoted
%E2%8E%BC
HTML hex reference
⎼
Wrong windows-1252 Mojibake
⎼
Encoding: GB18030 (hex bytes)
81 36 FA 32
RFC 5137
\u'23BC'
Bash and Zsh inside echo -e
\u23BC
C and C++
\u23BC
C#
\u23BC
CSS
\0023BC
Excel
=UNICHAR(9148)
Go
\u23BC
JavaScript
\u23BC
Modern JavaScript since ES6
\u{23bc}
JSON
\u23BC
Java
\u23BC
Lua
\u{23BC}
Matlab
char(9148)
Perl
"\x{23BC}"
PHP
\u{23bc}
PostgreSQL
U&'\23BC'
PowerShell
`u{23BC}
Python
\u23BC
Ruby
\u{23bc}
Rust
\u{23bc}
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