This unicode character belongs to the
Basic Latin
Unicode Block.
Decimal value
21
Codepoint
U+15
UTF-8 bytes (dec)
21
UTF-8 bytes (hex)
15
HTML entity

VIM Digraph
NK
Category
Cc
Class
0
Aliases
NEGATIVE ACKNOWLEDGE (control)
NAK (abbreviation)
Control-U was originally used by Digital Equipment Corporation computers to cancel the current line of typed-in text. Other manufacturers used Control-X for this purpose.