Source: Noto Sans Sinhala

U+0D81 Sinhala Sign Candrabindu

U+0D81 was added in Unicode version 13.0 in 2020. It belongs to the block U+0D80 to U+0DFF Sinhala in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Nonspacing Mark and is mainly used in the Sinhala 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+0D81 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	3457
UTF-8	E0 B6 81
UTF-16	0D 81
UTF-32	00 00 0D 81
URL-Quoted	%E0%B6%81
HTML hex reference	ඁ
Wrong windows-1252 Mojibake	â—Œà¶
Encoding: GB18030 (hex bytes)	81 32 C2 31

Elsewhere

Complete Record

Property	Value
Age (age)	13.0 (2020)
Unicode Name (na)	SINHALA SIGN CANDRABINDU
Unicode 1 Name (na1)	—
Block (blk)	Sinhala
General Category (gc)	Nonspacing Mark
Script (sc)	Sinhala
Bidirectional Category (bc)	Nonspacing Mark
Combining Class (ccc)	Not Reordered
Decomposition Type (dt)	none
Decomposition Mapping (dm)	Sinhala Sign Candrabindu
Lowercase (Lower)	✘
Simple Lowercase Mapping (slc)	Sinhala Sign Candrabindu
Lowercase Mapping (lc)	Sinhala Sign Candrabindu
Uppercase (Upper)	✘
Simple Uppercase Mapping (suc)	Sinhala Sign Candrabindu
Uppercase Mapping (uc)	Sinhala Sign Candrabindu
Simple Titlecase Mapping (stc)	Sinhala Sign Candrabindu
Titlecase Mapping (tc)	Sinhala Sign Candrabindu
Case Folding (cf)	Sinhala Sign Candrabindu
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)	Sinhala Sign Candrabindu
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)	Sinhala Sign Candrabindu
NFKC Quick Check (NFKC_QC)	Yes
NFKC_SCF (NFKC_SCF)	Sinhala Sign Candrabindu
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)	Sinhala Sign Candrabindu
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)	Sinhala Sign Candrabindu
Script Extension (scx)
Vertical Orientation (vo)	R