U+302F "〯" Hangul Double Dot Tone Mark Unicode Character

Unicode Version 17.0

U+302F "〯" Hangul Double Dot Tone Mark is a diacritical mark used in the Korean writing system, specifically within the Hangul script, to indicate a rising or double dot tone in certain historical or linguistic contexts. Historically, it was part of a set of tone marks employed in Middle Korean to denote pitch accents, though it is not commonly used in modern standard Korean. In Unicode, this character is classified under the "CJK Symbols and Punctuation" block and serves as a spacing modifier, meaning it occupies its own horizontal space rather than combining directly with a preceding letter. Its appearance consists of two small dots arranged vertically, similar to a colon or diaeresis, and it is distinct from the more common combining diacritical marks in that it functions as a standalone symbol rather than a combining character.

General Properties

Code Point U+302F
Version Added 1.1
Name Hangul Double Dot Tone Mark
Block CJK Symbols and Punctuation
General Category Spacing Mark
Canonical Combining Class Left
Bidirectional Class Left To Right

Encodings

HTML Decimal Encoding 〯
HTML Hex Encoding 〯
UTF-8 Encoding 0xE3 0x80 0xAF
UTF-16 Encoding 0x302F
UTF-32 Encoding 0x0000302F
C/C++/Java Escape \u302f

Unicode Properties

NFC Quick Check Yes
NFD Quick Check Yes
NFKC Quick Check Yes
NFKD Quick Check Yes
Numeric Type None
Numeric Value NaN
Line Break Combining Mark
East Asian Width Wide
Script Hangul
Script Extensions Hangul
Indic Syllabic Category Other
Indic Conjunct Break Extend
ID Continue Yes
XID Continue Yes
Diacritic Yes
Vertical Orientation Upright
Grapheme Extend Yes
Other Grapheme Extend Yes
Grapheme Cluster Break Extend
Word Break Extend
Sentence Break Extend