U+1EF4 "Ỵ" Latin Capital Letter Y with Dot Below Unicode Character

U+1EF4 "Ỵ" Latin Capital Letter Y with Dot Below is a specialized glyph used primarily in the Vietnamese alphabet, where the dot below, known as a "dấu nặng" or heavy tone mark, combines with the letter Y to indicate a low, creaky, or falling tone in certain Vietnamese words, particularly those with foreign origins or in specific regional dialects, and it falls within the Latin Extended Additional block designed to support the full tonal writing system of the Vietnamese language.

General Properties

Code Point	U+1EF4
Version Added	1.1
Name	Latin Capital Letter Y with Dot Below
Block	Latin Extended Additional
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Canonical
Decomposition Mapping	"Y" U+0059 Latin Capital Letter Y "̣" U+0323 Combining Dot Below

Encodings

HTML Decimal Encoding	Ỵ
HTML Hex Encoding	Ỵ
UTF-8 Encoding	0xE1 0xBB 0xB4
UTF-16 Encoding	0x1EF4
UTF-32 Encoding	0x00001EF4
C/C++/Java Escape	\u1ef4

Unicode Properties

NFC Quick Check	Yes
NFKC Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Uppercase	Yes
Simple Lowercase Code Point	"ỵ" U+1EF5 Latin Small Letter Y with Dot Below
Lowercase Code Point	"ỵ" U+1EF5 Latin Small Letter Y with Dot Below
Simple Case Folding	"ỵ" U+1EF5 Latin Small Letter Y with Dot Below
Case Folding	"ỵ" U+1EF5 Latin Small Letter Y with Dot Below
Cased	Yes
Changes When Casefolded	Yes
Changes When Casemapped	Yes
Changes When Lowercased	Yes
Changes When NFKC Casefolded	Yes
NFKC Casefold	"ỵ" U+1EF5 Latin Small Letter Y with Dot Below
NFKC Simple Casefold	"ỵ" U+1EF5 Latin Small Letter Y with Dot Below
Script	Latin
Script Extensions	Latin
Indic Syllabic Category	Other
ID Start	Yes
XID Start	Yes
ID Continue	Yes
XID Continue	Yes
Alphabetic	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Alphabetic letter
Sentence Break	Upper