Home U+20D0 to U+20FF Combining Diacritical Marks for Symbols
Glyph for U+20E0
Source: Noto Sans Symbols

U+20E0 Combining Enclosing Circle Backslash

U+20E0 was added in Unicode version 1.1 in 1993. It belongs to the block U+20D0 to U+20FF Combining Diacritical Marks for Symbols in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Enclosing Mark and inherits its script property from the preceding character.

The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Nonspacing Mark. When changing direction it is not mirrored. U+20E0 prohibits a line break before it. The glyph can be confused with 2 other glyphs.

For a discussion about the origins of this specific design see this answer on history.stackexchange. It pinpoints it to a meeting in 1931 in the context of the Geneva Convention Concerning the Unification of Road Signs.

The Wikipedia has the following information about this codepoint:

The general prohibition sign, also known informally as the no symbol, 'do not' sign, circle-backslash symbol, nay, interdictory circle, prohibited symbol, don't do it symbol, or universal no, is a red circle with a 45-degree diagonal line inside the circle from upper-left to lower-right. It is typically overlaid on a pictogram to warn that an activity is not permitted, or has accompanying text to describe what is prohibited.

Representations

System Representation
Nº 8416
UTF-8 E2 83 A0
UTF-16 20 E0
UTF-32 00 00 20 E0
URL-Quoted %E2%83%A0
HTML hex reference ⃠
Wrong windows-1252 Mojibake ◌⃠
Encoding: GB18030 (hex bytes) 81 36 B8 33

Related Characters

Confusables

Elsewhere

Complete Record

Property Value
Age (age) 1.1 (1993)
Unicode Name (na) COMBINING ENCLOSING CIRCLE BACKSLASH
Unicode 1 Name (na1) ENCLOSING CIRCLE SLASH
Block (blk) Combining Diacritical Marks for Symbols
General Category (gc) Enclosing Mark
Script (sc) Inherited
Bidirectional Category (bc) Nonspacing Mark
Combining Class (ccc) Not Reordered
Decomposition Type (dt) none
Decomposition Mapping (dm) Glyph for U+20E0 Combining Enclosing Circle Backslash
Lowercase (Lower) ✘
Simple Lowercase Mapping (slc) Glyph for U+20E0 Combining Enclosing Circle Backslash
Lowercase Mapping (lc) Glyph for U+20E0 Combining Enclosing Circle Backslash
Uppercase (Upper) ✘
Simple Uppercase Mapping (suc) Glyph for U+20E0 Combining Enclosing Circle Backslash
Uppercase Mapping (uc) Glyph for U+20E0 Combining Enclosing Circle Backslash
Simple Titlecase Mapping (stc) Glyph for U+20E0 Combining Enclosing Circle Backslash
Titlecase Mapping (tc) Glyph for U+20E0 Combining Enclosing Circle Backslash
Case Folding (cf) Glyph for U+20E0 Combining Enclosing Circle Backslash
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+20E0 Combining Enclosing Circle Backslash
Grapheme Cluster Break (GCB) Extend
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) Extend
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+20E0 Combining Enclosing Circle Backslash
NFKC Quick Check (NFKC_QC) Yes
NFKC_SCF (NFKC_SCF) Glyph for U+20E0 Combining Enclosing Circle Backslash
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) Extend
Soft Dotted (SD) ✘
Sentence Terminal (STerm) ✘
Terminal Punctuation (Term) ✘
Unified Ideograph (UIdeo) ✘
Variation Selector (VS) ✘
Word Break (WB) Extend
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+20E0 Combining Enclosing Circle Backslash
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) Transparent
Line Break (lb) Combining Mark
Numeric Type (nt) none
Numeric Value (nv) not a number
Simple Case Folding (scf) Glyph for U+20E0 Combining Enclosing Circle Backslash
Script Extension (scx)
Vertical Orientation (vo) U