U+17D0 was added to Unicode in version 3.0 (1999). It belongs to the block Khmer in the Basic Multilingual Plane.

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

The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Nonspacing Mark and is not mirrored. In text U+17D0 behaves as Complex Context regarding line breaks. It has type Extend for sentence and Extend for word breaks. The Grapheme Cluster Break is Extend.

The Wikipedia has the following information about this codepoint:

The Khmer alphabet or Khmer script (Khmer: អក្សរខ្មែរ; IPA: [ʔaʔsɑː kʰmaːe]) is an abugida (alphasyllabary) script used to write the Khmer language (the official language of Cambodia). It is also used to write Pali in the Buddhist liturgy of Cambodia and Thailand.

It was adapted from the Pallava script, a variant of the Grantha alphabet descended from the Brahmi script, which was used in southern India and South East Asia during the 5th and 6th centuries AD. The oldest dated inscription in Khmer was found at Angkor Borei District in Takéo Province south of Phnom Penh and dates from 611. The modern Khmer script differs somewhat from precedent forms seen on the inscriptions of the ruins of Angkor. The Thai and Lao scripts are descended from an older form of the Khmer script.

Khmer is written from left to right. Words within the same sentence or phrase are generally run together with no spaces between them. Consonant clusters within a word are "stacked", with the second (and occasionally third) consonant being written in reduced form under the main consonant. Originally there were 35 consonant characters, but modern Khmer uses only 33. Each such character in fact represents a consonant sound together with an inherent vowel – either â or ô.

There are some independent vowel characters, but vowel sounds are more commonly represented as dependent vowels – additional marks accompanying a consonant character, and indicating what vowel sound is to be pronounced after that consonant (or consonant cluster). Most dependent vowels have two different pronunciations, depending in most cases on the inherent vowel of the consonant to which they are added. In some positions, a consonant written with no dependent vowel is taken to be followed by the sound of its inherent vowel. There are also a number of diacritics used to indicate further modifications in pronunciation. The script also includes its own numerals and punctuation marks.


System Representation
UTF-8 E1 9F 90
UTF-16 17 D0
UTF-32 00 00 17 D0
URL-Quoted %E1%9F%90
HTML-Escape ័
Wrong windows-1252 Mojibake ័


Complete Record

Property Value
Age (age) 3.0
Unicode 1 Name (na1)
Block (blk) Khmer
General Category (gc) Nonspacing Mark
Script (sc) Khmer
Bidirectional Category (bc) Nonspacing Mark
Combining Class (ccc) Not Reordered
Decomposition Type (dt) None
Decomposition Mapping (dm) ័
Lowercase (Lower)
Simple Lowercase Mapping (slc) ័
Lowercase Mapping (lc) ័
Uppercase (Upper)
Simple Uppercase Mapping (suc) ័
Uppercase Mapping (uc) ័
Simple Titlecase Mapping (stc) ័
Titlecase Mapping (tc) ័
Case Folding (cf) ័
ASCII Hex Digit (AHex)
Alphabetic (Alpha)
Bidi Control (Bidi_C)
Bidi Mirrored (Bidi_M)
Bidi Paired Bracket (bpb) ័
Bidi Paired Bracket Type (bpt) None
Cased (Cased)
Composition Exclusion (CE)
Case Ignorable (CI)
Full Composition Exclusion (Comp_Ex)
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)
Dash (Dash)
Deprecated (Dep)
Default Ignorable Code Point (DI)
Diacritic (Dia)
East Asian Width (ea) Neutral
Extender (Ext)
FC NFKC Closure (FC_NFKC) ័
Grapheme Cluster Break (GCB) Extend
Grapheme Base (Gr_Base)
Grapheme Extend (Gr_Ext)
Hex Digit (Hex)
Hangul Syllable Type (hst) Not Applicable
Hyphen (Hyphen)
ID Continue (IDC)
Ideographic (Ideo)
ID Start (IDS)
IDS Binary Operator (IDSB)
IDS Trinary Operator and (IDST)
Indic Positional Category (InPC) Top
Indic Syllabic Category (InSC) Syllable_Modifier
ISO 10646 Comment (isc)
Joining Group (jg) No_Joining_Group
Join Control (Join_C)
Jamo Short Name (JSN)
Joining Type (jt) Transparent
Line Break (lb) Complex Context
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) ័
NFKC Quick Check (NFKC_QC) Yes
NFKD Quick Check (NFKD_QC) Yes
Numeric Type (nt) None
Numeric Value (nv) NaN
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)
Pattern Syntax (Pat_Syn)
Pattern White Space (Pat_WS)
Quotation Mark (QMark)
Radical (Radical)
Sentence Break (SB) Extend
Simple Case Folding (scf) ័
Script Extension (scx) Khmer
Soft Dotted (SD)
STerm (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)