U+FFFB
IAT
INTERLINEAR ANNOTATION TERMINATOR
Zero-width format control character governing layout and script joining.
Category:
Format (Cf)
Block:
Specials
Script:
Common
Age:
Unicode 3.0
Plane:
Basic Multilingual Plane (BMP)
Quick Facts
| Unicode Name |
INTERLINEAR ANNOTATION TERMINATOR
|
|
|---|---|---|
| Code Point |
U+FFFB
|
|
| Decimal Value |
65531
|
|
| General Category | Format (Cf) → | |
| Unicode Block | Specials → | |
| Script | Common → | |
| Unicode Version | Unicode 3.0 → | |
| Unicode Plane |
Basic Multilingual Plane (BMP)
|
Byte Encodings
| UTF-8 3 bytes |
EF BF BB
|
|
|---|---|---|
| UTF-16 Code Unit |
FFFB
|
|
| UTF-32 4 bytes |
0000FFFB
|
|
| UTF-16BE / LE Byte Order |
BE:
FF FB
LE: FB FF
|
|
| UTF-32BE / LE Byte Order |
BE:
00 00 FF FB
LE: FB FF 00 00
|
Developer Code Escapes
| HTML Decimal |

|
|
|---|---|---|
| HTML Hexadecimal |

|
|
| HTML Named Entity |
None
|
|
| CSS Escape |
\00FFFB
|
|
| JavaScript (ES6) |
\uFFFB
|
|
| JavaScript (UTF-16) |
\uFFFB
|
|
| JSON Escape |
\uFFFB
|
|
| Python |
\uFFFB
|
|
| PHP |
"\u{FFFB}"
|
|
| Java |
"\uFFFB"
|
|
| C / C++ |
"\uFFFB"
|
|
| Rust |
'\u{fffb}'
|
|
| URL Percent-Encoded |
%EF%BF%BB
|
Normalization & Decomposition
| Combining Class |
0 — Not Reordered (Spacing)
|
|
|---|---|---|
| Decomposition | None (Canonical / Precomposed Base) | |
| NFC / NFD Forms | Stable under all Unicode normalization forms (NFC, NFD, NFKC, NFKD). |
Bidirectional Properties
| Bidi Class |
ON — Other Neutral
|
|
|---|---|---|
| Bidi Mirrored | No |
Font Specimen & Rendering
Non-Printable Character Notice
Code point U+FFFB represents a IAT (General Category Cf). It does not produce a visible standalone glyph in standard font engines and is intended for programmatic, syntactic, layout, or lexical operations.