U+0013 "DC3" DEVICE CONTROL THREE Unicode Character

U+0013 "DC3" DEVICE CONTROL THREE is a control character from the C0 control code set originally defined in the ASCII standard. Its primary historical purpose in serial communications, particularly under protocols like XON/XOFF flow control, was to act as an "XOFF" signal, instructing the sending device to pause or stop its data transmission to prevent the receiving device's buffer from overflowing. This character functions as a non-printable command, enabling hardware or software to manage the flow of information over a communication channel.

General Properties

Code Point	U+0013
Version Added	1.1
Unicode 1.0 Name	Device Control Three
Block	Basic Latin
General Category	Control
Canonical Combining Class	Not Reordered
Bidirectional Class	Boundary Neutral
Alias	DC3 (abbreviation) DEVICE CONTROL THREE (control)

Encodings

HTML Decimal Encoding	
HTML Hex Encoding	
UTF-8 Encoding	0x13
UTF-16 Encoding	0x0013
UTF-32 Encoding	0x00000013
C/C++/Java Escape	\u0013

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