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Glyph for U+23AF
Source: Noto Sans Math

U+23AF Horizontal Line Extension

U+23AF was added in Unicode version 3.2 in 2002. It belongs to the block U+2300 to U+23FF Miscellaneous Technical in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Math Symbol and is commonly used, that is, in no specific script.

The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+23AF forms with similar adjacent characters prevents a line break inside it.

The Wikipedia has the following information about this codepoint:

The dash is a punctuation mark consisting of a long horizontal line. It is similar in appearance to the hyphen but is longer and sometimes higher from the baseline. The most common versions are the en dash , generally longer than the hyphen but shorter than the minus sign; the em dash , longer than either the en dash or the minus sign; and the horizontal bar , whose length varies across typefaces but tends to be between those of the en and em dashes.

Typical uses of dashes are to mark a break in a sentence, or to set off an explanatory remark (similar to parenthesis), or to show spans of time or ranges of values.

The em dash is sometimes used as a leading character to identify the source of a quoted text.

Representations

System Representation
9135
UTF-8 E2 8E AF
UTF-16 23 AF
UTF-32 00 00 23 AF
URL-Quoted %E2%8E%AF
HTML hex reference ⎯
Wrong windows-1252 Mojibake ⎯
Encoding: GB18030 (hex bytes) 81 36 F8 39

Elsewhere

Complete Record

Property Value
Age (age) 3.2 (2002)
Unicode Name (na) HORIZONTAL LINE EXTENSION
Unicode 1 Name (na1)
Block (blk) Miscellaneous Technical
General Category (gc) Math Symbol
Script (sc) Common
Bidirectional Category (bc) Other Neutral
Combining Class (ccc) Not Reordered
Decomposition Type (dt) none
Decomposition Mapping (dm) Glyph for U+23AF Horizontal Line Extension
Lowercase (Lower)
Simple Lowercase Mapping (slc) Glyph for U+23AF Horizontal Line Extension
Lowercase Mapping (lc) Glyph for U+23AF Horizontal Line Extension
Uppercase (Upper)
Simple Uppercase Mapping (suc) Glyph for U+23AF Horizontal Line Extension
Uppercase Mapping (uc) Glyph for U+23AF Horizontal Line Extension
Simple Titlecase Mapping (stc) Glyph for U+23AF Horizontal Line Extension
Titlecase Mapping (tc) Glyph for U+23AF Horizontal Line Extension
Case Folding (cf) Glyph for U+23AF Horizontal Line Extension
ASCII Hex Digit (AHex)
Alphabetic (Alpha)
Bidi Control (Bidi_C)
Bidi Mirrored (Bidi_M)
Composition Exclusion (CE)
Case Ignorable (CI)
Changes When Casefolded (CWCF)
Changes When Casemapped (CWCM)
Changes When NFKC Casefolded (CWKCF)
Changes When Lowercased (CWL)
Changes When Titlecased (CWT)
Changes When Uppercased (CWU)
Cased (Cased)
Full Composition Exclusion (Comp_Ex)
Default Ignorable Code Point (DI)
Dash (Dash)
Deprecated (Dep)
Diacritic (Dia)
Emoji Modifier Base (EBase)
Emoji Component (EComp)
Emoji Modifier (EMod)
Emoji Presentation (EPres)
Emoji (Emoji)
Extender (Ext)
Extended Pictographic (ExtPict)
FC NFKC Closure (FC_NFKC) Glyph for U+23AF Horizontal Line Extension
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base)
Grapheme Extend (Gr_Ext)
Grapheme Link (Gr_Link)
Hex Digit (Hex)
Hyphen (Hyphen)
ID Continue (IDC)
ID Start (IDS)
IDS Binary Operator (IDSB)
IDS Trinary Operator and (IDST)
IDSU (IDSU) 0
ID_Compat_Math_Continue (ID_Compat_Math_Continue) 0
ID_Compat_Math_Start (ID_Compat_Math_Start) 0
Ideographic (Ideo)
InCB (InCB) None
Indic Mantra Category (InMC)
Indic Positional Category (InPC) NA
Indic Syllabic Category (InSC) Other
Jamo Short Name (JSN)
Join Control (Join_C)
Logical Order Exception (LOE)
Modifier Combining Mark (MCM)
Math (Math)
Noncharacter Code Point (NChar)
NFC Quick Check (NFC_QC) Yes
NFD Quick Check (NFD_QC) Yes
NFKC Casefold (NFKC_CF) Glyph for U+23AF Horizontal Line Extension
NFKC Quick Check (NFKC_QC) Yes
NFKC_SCF (NFKC_SCF) Glyph for U+23AF Horizontal Line Extension
NFKD Quick Check (NFKD_QC) Yes
Other Alphabetic (OAlpha)
Other Default Ignorable Code Point (ODI)
Other Grapheme Extend (OGr_Ext)
Other ID Continue (OIDC)
Other ID Start (OIDS)
Other Lowercase (OLower)
Other Math (OMath)
Other Uppercase (OUpper)
Prepended Concatenation Mark (PCM)
Pattern Syntax (Pat_Syn)
Pattern White Space (Pat_WS)
Quotation Mark (QMark)
Regional Indicator (RI)
Radical (Radical)
Sentence Break (SB) Other
Soft Dotted (SD)
Sentence Terminal (STerm)
Terminal Punctuation (Term)
Unified Ideograph (UIdeo)
Variation Selector (VS)
Word Break (WB) Other
White Space (WSpace)
XID Continue (XIDC)
XID Start (XIDS)
Expands On NFC (XO_NFC)
Expands On NFD (XO_NFD)
Expands On NFKC (XO_NFKC)
Expands On NFKD (XO_NFKD)
Bidi Paired Bracket (bpb) Glyph for U+23AF Horizontal Line Extension
Bidi Paired Bracket Type (bpt) None
East Asian Width (ea) neutral
Hangul Syllable Type (hst) Not Applicable
ISO 10646 Comment (isc)
Joining Group (jg) No_Joining_Group
Joining Type (jt) Non Joining
Line Break (lb) Alphabetic
Numeric Type (nt) none
Numeric Value (nv) not a number
Simple Case Folding (scf) Glyph for U+23AF Horizontal Line Extension
Script Extension (scx)
Vertical Orientation (vo) R