Source: Noto Serif Tangut

U+FF1F Fullwidth Question Mark

U+FF1F was added in Unicode version 1.1 in 1993. It belongs to the block U+FF00 to U+FFEF Halfwidth and Fullwidth Forms in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Other Punctuation and is commonly used, that is, in no specific script.

The glyph is a wide version of the glyph Question Mark. Accordingly, its width in East Asian Text is fullwidth. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. It can end sentences at appropriate places. U+FF1F prohibits a line break before it.

The Wikipedia has the following information about this codepoint:

The question mark ? (also known as interrogation point, query, or eroteme in journalism) is a punctuation mark that indicates a question or interrogative clause or phrase in many languages.

Representations

System	Representation
Nº	65311
UTF-8	EF BC 9F
UTF-16	FF 1F
UTF-32	00 00 FF 1F
URL-Quoted	%EF%BC%9F
HTML hex reference	？
Wrong windows-1252 Mojibake	ï¼Ÿ
Encoding: EUC-KR (hex bytes)	A3 BF
Encoding: JIS0208 (hex bytes)	A1 A9
Adobe Glyph List	questionmonospace

Elsewhere

Complete Record

Property	Value
Age (age)	1.1 (1993)
Unicode Name (na)	FULLWIDTH QUESTION MARK
Unicode 1 Name (na1)	—
Block (blk)	Halfwidth and Fullwidth Forms
General Category (gc)	Other Punctuation
Script (sc)	Common
Bidirectional Category (bc)	Other Neutral
Combining Class (ccc)	Not Reordered
Decomposition Type (dt)	wide
Decomposition Mapping (dm)	Question Mark
Lowercase (Lower)	✘
Simple Lowercase Mapping (slc)	Fullwidth Question Mark
Lowercase Mapping (lc)	Fullwidth Question Mark
Uppercase (Upper)	✘
Simple Uppercase Mapping (suc)	Fullwidth Question Mark
Uppercase Mapping (uc)	Fullwidth Question Mark
Simple Titlecase Mapping (stc)	Fullwidth Question Mark
Titlecase Mapping (tc)	Fullwidth Question Mark
Case Folding (cf)	Fullwidth Question Mark
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)	Fullwidth Question Mark
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)	✘
Math (Math)	✘
Noncharacter Code Point (NChar)	✘
NFC Quick Check (NFC_QC)	Yes
NFD Quick Check (NFD_QC)	Yes
NFKC Casefold (NFKC_CF)	Question Mark
NFKC Quick Check (NFKC_QC)	No
NFKC_SCF (NFKC_SCF)	Question Mark
NFKD Quick Check (NFKD_QC)	No
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)	Sentence Terminal
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)	Fullwidth Question Mark
Bidi Paired Bracket Type (bpt)	None
East Asian Width (ea)	fullwidth
Hangul Syllable Type (hst)	Not Applicable
ISO 10646 Comment (isc)	—
Joining Group (jg)	No_Joining_Group
Joining Type (jt)	Non Joining
Line Break (lb)	Exclamation/Interrogation
Numeric Type (nt)	none
Numeric Value (nv)	not a number
Simple Case Folding (scf)	Fullwidth Question Mark
Script Extension (scx)
Vertical Orientation (vo)	Tu