Source: Noto Sans Symbols 2

U+28C1 Braille Pattern Dots-178

U+28C1 was added in Unicode version 3.0 in 1999. It belongs to the block U+2800 to U+28FF Braille Patterns in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Other Symbol and is mainly used in the Braille script.

The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+28C1 forms with similar adjacent characters prevents a line break inside it.

The Wikipedia has the following information about this codepoint:

The Braille pattern dots-1 ( ⠁ ) is a 6-dot or 8-dot braille cell with the top left dot raised. It is represented by the Unicode code point U+2801, and in Braille ASCII with "A".

Representations

System	Representation
Nº	10433
UTF-8	E2 A3 81
UTF-16	28 C1
UTF-32	00 00 28 C1
URL-Quoted	%E2%A3%81
HTML hex reference	⣁
Wrong windows-1252 Mojibake	â£
Encoding: GB18030 (hex bytes)	81 37 E8 37

Elsewhere

Complete Record

Property	Value
Age (age)	3.0 (1999)
Unicode Name (na)	BRAILLE PATTERN DOTS-178
Unicode 1 Name (na1)	—
Block (blk)	Braille Patterns
General Category (gc)	Other Symbol
Script (sc)	Braille
Bidirectional Category (bc)	Left To Right
Combining Class (ccc)	Not Reordered
Decomposition Type (dt)	none
Decomposition Mapping (dm)	Braille Pattern Dots-178
Lowercase (Lower)	✘
Simple Lowercase Mapping (slc)	Braille Pattern Dots-178
Lowercase Mapping (lc)	Braille Pattern Dots-178
Uppercase (Upper)	✘
Simple Uppercase Mapping (suc)	Braille Pattern Dots-178
Uppercase Mapping (uc)	Braille Pattern Dots-178
Simple Titlecase Mapping (stc)	Braille Pattern Dots-178
Titlecase Mapping (tc)	Braille Pattern Dots-178
Case Folding (cf)	Braille Pattern Dots-178
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)	Braille Pattern Dots-178
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)	Braille Pattern Dots-178
NFKC Quick Check (NFKC_QC)	Yes
NFKC_SCF (NFKC_SCF)	Braille Pattern Dots-178
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)	Braille Pattern Dots-178
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)	Braille Pattern Dots-178
Script Extension (scx)
Vertical Orientation (vo)	R