Source: Noto Sans Gurmukhi

U+0A01 Gurmukhi Sign Adak Bindi

U+0A01 was added in Unicode version 4.0 in 2003. It belongs to the block U+0A00 to U+0A7F Gurmukhi in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Nonspacing Mark and is mainly used in the Gurmukhi script.

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+0A01 prohibits a line break before it.

The Wikipedia has the following information about this codepoint:

Chandrabindu (IAST: candrabindu, lit. 'moon dot' in Sanskrit) is a diacritic sign with the form of a dot inside the lower half of a circle. It is used in the Devanagari (ँ), Bengali-Assamese (ঁ), Gujarati (ઁ), Odia (ଁ), Telugu (ఁ), Javanese ( ꦀ) and other scripts.
It usually means that the previous vowel is nasalized.
In Hindi, it is replaced in writing by anusvara when it is written above a consonant that carries a vowel symbol that extends above the top line.
In Classical Sanskrit, it seems to occur only over a lla conjunct consonant, to show that it is pronounced as a nasalized double l, which occurs if -nl- have become assimilated in sandhi.
In Vedic Sanskrit, it is used instead of anusvara to represent the sound anunasika when the next word starts with a vowel. It usually occurs where in earlier times a word ended in -ans.

Representations

System	Representation
Nº	2561
UTF-8	E0 A8 81
UTF-16	0A 01
UTF-32	00 00 0A 01
URL-Quoted	%E0%A8%81
HTML hex reference	ਁ
Wrong windows-1252 Mojibake	â—Œà¨
Encoding: GB18030 (hex bytes)	81 31 E6 35

Elsewhere

Complete Record

Property	Value
Age (age)	4.0 (2003)
Unicode Name (na)	GURMUKHI SIGN ADAK BINDI
Unicode 1 Name (na1)	—
Block (blk)	Gurmukhi
General Category (gc)	Nonspacing Mark
Script (sc)	Gurmukhi
Bidirectional Category (bc)	Nonspacing Mark
Combining Class (ccc)	Not Reordered
Decomposition Type (dt)	none
Decomposition Mapping (dm)	Gurmukhi Sign Adak Bindi
Lowercase (Lower)	✘
Simple Lowercase Mapping (slc)	Gurmukhi Sign Adak Bindi
Lowercase Mapping (lc)	Gurmukhi Sign Adak Bindi
Uppercase (Upper)	✘
Simple Uppercase Mapping (suc)	Gurmukhi Sign Adak Bindi
Uppercase Mapping (uc)	Gurmukhi Sign Adak Bindi
Simple Titlecase Mapping (stc)	Gurmukhi Sign Adak Bindi
Titlecase Mapping (tc)	Gurmukhi Sign Adak Bindi
Case Folding (cf)	Gurmukhi Sign Adak Bindi
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)	Gurmukhi Sign Adak Bindi
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)	Top
Indic Syllabic Category (InSC)	Bindu
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)	Gurmukhi Sign Adak Bindi
NFKC Quick Check (NFKC_QC)	Yes
NFKC_SCF (NFKC_SCF)	Gurmukhi Sign Adak Bindi
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)	Gurmukhi Sign Adak Bindi
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)	Gurmukhi Sign Adak Bindi
Script Extension (scx)
Vertical Orientation (vo)	R