U+2104 · Other symbol
Centre Line Symbol Symbol ℄
℄ is centre line symbol, U+2104. Unicode also records it as “clone”. It was added in Unicode 1.1, and Unicode files it under Other symbol.
Also known as
- clone
Unicode 1.0 called this character c l symbol. The standard renamed it later, but documents, fonts and font-editing tools from that era still use the old name.
Codes & technical data
| Unicode | U+2104 | |
|---|---|---|
| HTML hex | ℄ | |
| HTML decimal | ℄ | |
| CSS | \2104 | |
| JavaScript | \u{2104} | |
| Python | \U00002104 | |
| Java / C# | \u2104 | |
| Rust | \u{2104} | |
| Swift | \u{2104} | |
| PHP | \u{2104} | |
| URL encoded | %E2%84%84 | |
| UTF-8 bytes | E2 84 84 | |
| UTF-16 bytes | 2104 | |
| Base64 | 4oSE | |
| Decimal | 8452 | |
| Category | Other symbol (So) | |
| Introduced | Unicode 1.1 | |
Will ℄ survive being pasted?
- Normalisation. Yes. ℄ is unchanged by NFKC, so it survives normalising systems intact.
- Legacy encodings. ℄ is Unicode-only — it has no Latin-1 equivalent, so a system stuck on an 8-bit encoding cannot represent it.
- Size. 3 bytes in UTF-8. Character-limited fields — SMS, bios, some form validators — usually count bytes, not characters.
Other line characters
Unicode names 6 characters ending in “line”. They differ by direction, weight or decoration rather than by meaning.
Nearby in Letterlike Symbols
Characters built out of letters but treated as symbols — ℃ ℉ №, the trademark and service marks, and the script and blackletter letters that mathematics uses as distinct variables. Most normalise back to plain letters, which is worth knowing before pasting one into a password field.
How to type ℄
| Windows | Type 2104 then press Alt+X |
|---|---|
| macOS | Press Ctrl+Cmd+Space, then search for “centre line symbol” |
| Linux | Press Ctrl+Shift+U, type 2104, press Enter |
| HTML | ℄ |
About Unicode’s Other symbol category
Unicode files this under "other symbol" — the catch-all for pictographs, signs and marks that are neither maths, currency, nor letter-like. It is the largest symbol category in the standard.
Frequently asked questions
- How do I type the ℄ centre line symbol symbol?
- On Windows, type 2104 and press Alt+X. On Linux press Ctrl+Shift+U then 2104. On any system the quickest route is the copy button on this page.
- What is the code for ℄?
- Centre Line Symbol is U+2104. In UTF-8 it takes 3 bytes. The table above lists every escape format.
- What kind of character is ℄?
- Centre Line Symbol is filed under Other symbol in the Letterlike Symbols block, and was introduced in Unicode 1.1. Unicode files this under "other symbol" — the catch-all for pictographs, signs and marks that are neither maths, currency, nor letter-like. It is the largest symbol category in the standard.