Centre Line Symbol (℄) is the Unicode character at U+2104 in the Letterlike Symbols block (official name: CENTRE LINE SYMBOL). It is used in technical drawings and engineering notes to mark a center line.
Remember
Character ℄
Unicode U+2104
Hex entity ℄
Decimal ℄
CSS escape \2104
Named entity (none)
All of these produce the same glyph: ℄. Prefer the Unicode character when you need that exact technical mark; spell out “center line” in general prose when the symbol is unclear.
Reference
Quick Reference
One table for every form you will actually use.
Form
Code
Where it goes
Direct character
℄
HTML text (UTF-8)
Hex entity
℄
HTML markup
Decimal entity
℄
HTML markup
CSS escape
\2104
Stylesheet content
Named entity
—
Not defined in HTML5
When to use which
Situation
Use
Need the centre line glyph ℄
Type ℄, or ℄ / ℄
Generated text via ::before / ::after
content: "\2104"
General prose about center lines
Spell out “center line” / “centre line”
Looking for ¢reline; or similar
Does not exist — use numeric form
See it
Live Preview
Centre Line Symbol rendered in common writing contexts.
Inline textMark: ℄ axis
Large glyph℄
Compared℄ CL
Monospacedwg ℄ → center line
With entitiesHex: ℄ | Decimal: ℄
Code
Complete HTML Example
One page that shows Centre Line Symbol with the hex entity, decimal entity, CSS escape, and a typed character. Use View Output or open the live editor.
Hex + Decimal + CSS + Typed
All four ways to produce ℄ in a single document.
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Centre Line Symbol (℄) in HTML</title>
<style>
#point::after {
content: "\2104";
}
</style>
</head>
<body>
<p>Centre Line Symbol using Hex Code: ℄</p>
<p>Centre Line Symbol using HTML Code: ℄</p>
<p id="point">Centre Line Symbol using CSS Entity: </p>
<p>Typed directly: ℄</p>
</body>
</html>
Centre Line Symbol using Hex Code: ℄
Centre Line Symbol using HTML Code: ℄
Centre Line Symbol using CSS Entity: ℄
Typed directly: ℄
How It Works
1. Hex:U+2104 → ℄ in HTML. The browser turns it into ℄.
2. Decimal: same code point as 8452 → ℄. Same result as hex.
3. CSS: use \2104 in content (not an HTML entity). #point::after appends that ℄ after the paragraph text.
4. Typed ℄: fine in UTF-8 pages. All four lines show the same glyph.
Pitfalls & Tips
Common mistakes when working with Centre Line Symbol entities.
Named?
No named entity
HTML5 does not define ¢reline; or similar. Use numeric forms.
CSS vs HTML
Do not mix escapes
\2104 belongs in CSS. ℄ / ℄ belong in HTML.
Audience
Specialized mark
Many readers will not recognize ℄. Label it on first use outside engineering contexts.
Fonts
Check the glyph
Letterlike Symbols coverage varies. If ℄ is missing, fall back to “CL” or “center line.”
Semicolon
End references
Always finish with ; — write ℄, not ℄.
Spelling
Centre vs center
Unicode uses “centre” in the official name. The character is the same either way: U+2104.
Compatibility
Browser Support
Centre Line Symbol (U+2104) and its numeric entity forms (℄, ℄, CSS \\2104) are supported in all mainstream browsers. Glyph shape depends on the font.
✓ Universal support
Centre Line Symbol (℄)
Encode with hex, decimal, or CSS escape — or paste ℄ in UTF-8 HTML.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+2104 / entitiesFull support
Bottom line: Use ℄ or ℄ for the Unicode glyph, and \\2104 only inside CSS content. Prefer plain text when the audience may not know the mark.
Remember
Key Takeaways
Unicode: centre line symbol is U+2104 (decimal 8452).
HTML: use ℄ or ℄ when you need an entity.
CSS: use \2104 inside content for generated text.
Use case: technical drawings and engineering notes — not everyday prose.
One line:U+2104 → ℄ / ℄ / CSS \2104, or paste ℄.
Frequently Asked Questions
Use ℄ (hex), ℄ (decimal), or the CSS escape \2104 in the content property. All render ℄. You can also paste ℄ directly when your file is UTF-8.
U+2104 (hex 2104, decimal 8452). Unicode names it CENTRE LINE SYMBOL. It belongs to the Letterlike Symbols block.
No. HTML5 does not define a named entity for ℄. Use numeric references like ℄ or ℄.
Use it in technical drawings, CAD notes, blueprints, and engineering text that needs the center-line mark. For ordinary “center” meaning in prose, spell the word instead.
HTML entities (℄ or ℄) go in markup. The CSS escape \2104 is used in stylesheets (usually in the content property of ::before/::after). Both render ℄.
No. Unicode uses the British spelling in the character name (CENTRE LINE SYMBOL), but it is one code point: U+2104.
🤔
Did you know?
Centre line symbol is Unicode U+2104 (decimal 8452) — official name CENTRE LINE SYMBOL in the Letterlike Symbols block. HTML5 has no named entity. It appears in technical drawings and engineering notation for a center line.
