U+23AF "⎯" Horizontal Line Extension Unicode Character

U+23AF "⎯" Horizontal Line Extension is a typographic symbol classified as a graphic character within the Miscellaneous Technical block, designed specifically to extend or lengthen horizontal lines, such as those used in box-drawing or form layouts. It is distinct from a standard hyphen or em dash, as it represents a continuous, extendable line segment that can be repeated to create a longer visual bar without gaps. In plain text environments, it is often employed to simulate or replace the appearance of a long horizontal rule, though its display width and style depend heavily on the font and rendering engine used.

General Properties

Code Point	U+23AF
Version Added	3.2
Name	Horizontal Line 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 0xAF
UTF-16 Encoding	0x23AF
UTF-32 Encoding	0x000023AF
C/C++/Java Escape	\u23af

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