U+0003 "ETX" END OF TEXT Unicode Character

U+0003 "ETX" END OF TEXT is a control character originally defined for telegraph and early computer communication protocols to signal the conclusion of a text or data stream, distinguishing it from other control codes like STX (Start of Text). Within the Unicode standard, it occupies the C0 control code range and is primarily used in low level serial protocols, terminal emulation, and telecommunications to denote where transmitted information ends, allowing receiving systems to properly parse or terminate processing. In modern computing, it maintains historical significance and can appear in raw data streams, but it is not typically rendered as a visible glyph in text processing.

General Properties

Code Point	U+0003
Version Added	1.1
Unicode 1.0 Name	End of Text
Block	Basic Latin
General Category	Control
Canonical Combining Class	Not Reordered
Bidirectional Class	Boundary Neutral
Alias	END OF TEXT (control) ETX (abbreviation)

Encodings

HTML Decimal Encoding	
HTML Hex Encoding	
UTF-8 Encoding	0x03
UTF-16 Encoding	0x0003
UTF-32 Encoding	0x00000003
C/C++/Java Escape	\u0003

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
Script	Common
Script Extensions	Common
Indic Syllabic Category	Other
Vertical Orientation	Rotated
Grapheme Cluster Break	Control
Word Break	Other
Sentence Break	Other