U+23AE "⎮" Integral Extension Unicode Character

U+23AE "⎮" Integral Extension is a typographical symbol used primarily in mathematical typesetting to represent the vertical extender bar that forms the middle section of a long integral sign. Unlike the standard integral symbol, which is typically a single glyph, this character is designed to be stacked or repeated vertically, allowing for the construction of tall integral signs that span multiple lines of text or mathematical expressions. It functions as a kind of invisible or semivisible connector, ensuring visual continuity when a system lacks automatic glyph scaling, and is most commonly seen in plain text or older document formats where complex mathematics is represented with discrete character components.

General Properties

Code Point	U+23AE
Version Added	3.2
Name	Integral Extension
Block	Miscellaneous Technical
General Category	Math Symbol
Canonical Combining Class	Not Reordered
Bidirectional Class	Other Neutral

Encodings

HTML Decimal Encoding	⎮
HTML Hex Encoding	⎮
UTF-8 Encoding	0xE2 0x8E 0xAE
UTF-16 Encoding	0x23AE
UTF-32 Encoding	0x000023AE
C/C++/Java Escape	\u23ae

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Script	Common
Script Extensions	Common
Indic Syllabic Category	Other
Pattern Syntax	Yes
Math	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other