Other ID Start - No
Unicode Version 18.0
No is the designation for characters that are explicitly excluded from being used as the start of an identifier, even though they might otherwise appear valid or share visual similarities with allowed characters. These exclusions cover a specific set of code points, including certain digits, punctuation marks, and symbols, which are reserved to prevent confusion or parsing ambiguities in programming languages and data formats. For example, characters like the combining mark U+0301 or the underscore do not qualify, as they either require a preceding base character or serve as connectors, not starters. The "No" value clarifies that such characters cannot initiate a variable, function, or other named entity, ensuring consistent and unambiguous syntax across different systems.
1-250 of 310335 results
U+0000
NUL
NULL
U+0001
SOH
START OF HEADING
U+0002
STX
START OF TEXT
U+0003
ETX
END OF TEXT
U+0004
EOT
END OF TRANSMISSION
U+0005
ENQ
ENQUIRY
U+0006
ACK
ACKNOWLEDGE
U+0007
BEL
ALERT
U+0008
BS
BACKSPACE
U+0009
HT
CHARACTER TABULATION
U+000A
EOL
END OF LINE
U+000B
VT
LINE TABULATION
U+000C
FF
FORM FEED
U+000D
CR
CARRIAGE RETURN
U+000E
SO
LOCKING-SHIFT ONE
U+000F
SI
LOCKING-SHIFT ZERO
U+0010
DLE
DATA LINK ESCAPE
U+0011
DC1
DEVICE CONTROL ONE
U+0012
DC2
DEVICE CONTROL TWO
U+0013
DC3
DEVICE CONTROL THREE
U+0014
DC4
DEVICE CONTROL FOUR
U+0015
NAK
NEGATIVE ACKNOWLEDGE
U+0016
SYN
SYNCHRONOUS IDLE
U+0017
ETB
END OF TRANSMISSION BLOCK
U+0018
CAN
CANCEL
U+0019
EM
END OF MEDIUM
U+001A
SUB
SUBSTITUTE
U+001B
ESC
ESCAPE
U+001C
FS
FILE SEPARATOR
U+001D
GS
GROUP SEPARATOR
U+001E
RS
INFORMATION SEPARATOR TWO
U+001F
US
INFORMATION SEPARATOR ONE
U+0020
SP
Space
U+0021
!
Exclamation Mark
U+0022
"
Quotation Mark
U+0023
#
Number Sign
U+0024
$
Dollar Sign
U+0025
%
Percent Sign
U+0026
&
Ampersand
U+0027
'
Apostrophe
U+0028
(
Left Parenthesis
U+0029
)
Right Parenthesis
U+002A
*
Asterisk
U+002B
+
Plus Sign
U+002C
,
Comma
U+002D
-
Hyphen-Minus
U+002E
.
Full Stop
U+002F
/
Solidus
U+0030
0
Digit Zero
U+0031
1
Digit One
U+0032
2
Digit Two
U+0033
3
Digit Three
U+0034
4
Digit Four
U+0035
5
Digit Five
U+0036
6
Digit Six
U+0037
7
Digit Seven
U+0038
8
Digit Eight
U+0039
9
Digit Nine
U+003A
:
Colon
U+003B
;
Semicolon
U+003C
<
Less-than Sign
U+003D
=
Equals Sign
U+003E
>
Greater-than Sign
U+003F
?
Question Mark
U+0040
@
Commercial At
U+0041
A
Latin Capital Letter A
U+0042
B
Latin Capital Letter B
U+0043
C
Latin Capital Letter C
U+0044
D
Latin Capital Letter D
U+0045
E
Latin Capital Letter E
U+0046
F
Latin Capital Letter F
U+0047
G
Latin Capital Letter G
U+0048
H
Latin Capital Letter H
U+0049
I
Latin Capital Letter I
U+004A
J
Latin Capital Letter J
U+004B
K
Latin Capital Letter K
U+004C
L
Latin Capital Letter L
U+004D
M
Latin Capital Letter M
U+004E
N
Latin Capital Letter N
U+004F
O
Latin Capital Letter O
U+0050
P
Latin Capital Letter P
U+0051
Q
Latin Capital Letter Q
U+0052
R
Latin Capital Letter R
U+0053
S
Latin Capital Letter S
U+0054
T
Latin Capital Letter T
U+0055
U
Latin Capital Letter U
U+0056
V
Latin Capital Letter V
U+0057
W
Latin Capital Letter W
U+0058
X
Latin Capital Letter X
U+0059
Y
Latin Capital Letter Y
U+005A
Z
Latin Capital Letter Z
U+005B
[
Left Square Bracket
U+005C
\
Reverse Solidus
U+005D
]
Right Square Bracket
U+005E
^
Circumflex Accent
U+005F
_
Low Line
U+0060
`
Grave Accent
U+0061
a
Latin Small Letter A
U+0062
b
Latin Small Letter B
U+0063
c
Latin Small Letter C
U+0064
d
Latin Small Letter D
U+0065
e
Latin Small Letter E
U+0066
f
Latin Small Letter F
U+0067
g
Latin Small Letter G
U+0068
h
Latin Small Letter H
U+0069
i
Latin Small Letter I
U+006A
j
Latin Small Letter J
U+006B
k
Latin Small Letter K
U+006C
l
Latin Small Letter L
U+006D
m
Latin Small Letter M
U+006E
n
Latin Small Letter N
U+006F
o
Latin Small Letter O
U+0070
p
Latin Small Letter P
U+0071
q
Latin Small Letter Q
U+0072
r
Latin Small Letter R
U+0073
s
Latin Small Letter S
U+0074
t
Latin Small Letter T
U+0075
u
Latin Small Letter U
U+0076
v
Latin Small Letter V
U+0077
w
Latin Small Letter W
U+0078
x
Latin Small Letter X
U+0079
y
Latin Small Letter Y
U+007A
z
Latin Small Letter Z
U+007B
{
Left Curly Bracket
U+007C
|
Vertical Line
U+007D
}
Right Curly Bracket
U+007E
~
Tilde
U+007F
DEL
DELETE
U+0080
PAD
Latin-1 Supplement
U+0081
HOP
Latin-1 Supplement
U+0082
BPH
BREAK PERMITTED HERE
U+0083
NBH
NO BREAK HERE
U+0084
IND
INDEX
U+0085
NEL
NEXT LINE
U+0086
SSA
START OF SELECTED AREA
U+0087
ESA
END OF SELECTED AREA
U+0088
HTS
CHARACTER TABULATION SET
U+0089
HTJ
CHARACTER TABULATION WITH JUSTIFICATION
U+008A
VTS
LINE TABULATION SET
U+008B
PLD
PARTIAL LINE DOWN
U+008C
PLU
PARTIAL LINE BACKWARD
U+008D
RI
REVERSE INDEX
U+008E
SS2
SINGLE SHIFT TWO
U+008F
SS3
SINGLE SHIFT THREE
U+0090
DCS
DEVICE CONTROL STRING
U+0091
PU1
PRIVATE USE ONE
U+0092
PU2
PRIVATE USE TWO
U+0093
STS
SET TRANSMIT STATE
U+0094
CCH
CANCEL CHARACTER
U+0095
MW
MESSAGE WAITING
U+0096
SPA
START OF GUARDED AREA
U+0097
EPA
END OF GUARDED AREA
U+0098
SOS
START OF STRING
U+0099
SGC
Latin-1 Supplement
U+009A
SCI
SINGLE CHARACTER INTRODUCER
U+009B
CSI
CONTROL SEQUENCE INTRODUCER
U+009C
ST
STRING TERMINATOR
U+009D
OSC
OPERATING SYSTEM COMMAND
U+009E
PM
PRIVACY MESSAGE
U+009F
APC
APPLICATION PROGRAM COMMAND
U+00A0
No-Break Space
U+00A1
¡
Inverted Exclamation Mark
U+00A2
¢
Cent Sign
U+00A3
£
Pound Sign
U+00A4
¤
Currency Sign
U+00A5
¥
Yen Sign
U+00A6
¦
Broken Bar
U+00A7
§
Section Sign
U+00A8
¨
Diaeresis
U+00A9
©
Copyright Sign
U+00AA
ª
Feminine Ordinal Indicator
U+00AB
«
Left-Pointing Double Angle Quotation Mark
U+00AC
¬
Not Sign
U+00AD
Soft Hyphen
U+00AE
®
Registered Sign
U+00AF
¯
Macron
U+00B0
°
Degree Sign
U+00B1
±
Plus-Minus Sign
U+00B2
²
Superscript Two
U+00B3
³
Superscript Three
U+00B4
´
Acute Accent
U+00B5
µ
Micro Sign
U+00B6
¶
Pilcrow Sign
U+00B7
·
Middle Dot
U+00B8
¸
Cedilla
U+00B9
¹
Superscript One
U+00BA
º
Masculine Ordinal Indicator
U+00BB
»
Right-Pointing Double Angle Quotation Mark
U+00BC
¼
Vulgar Fraction One Quarter
U+00BD
½
Vulgar Fraction One Half
U+00BE
¾
Vulgar Fraction Three Quarters
U+00BF
¿
Inverted Question Mark
U+00C0
À
Latin Capital Letter A with Grave
U+00C1
Á
Latin Capital Letter A with Acute
U+00C2
Â
Latin Capital Letter A with Circumflex
U+00C3
Ã
Latin Capital Letter A with Tilde
U+00C4
Ä
Latin Capital Letter A with Diaeresis
U+00C5
Å
Latin Capital Letter A with Ring Above
U+00C6
Æ
Latin Capital Letter Ae
U+00C7
Ç
Latin Capital Letter C with Cedilla
U+00C8
È
Latin Capital Letter E with Grave
U+00C9
É
Latin Capital Letter E with Acute
U+00CA
Ê
Latin Capital Letter E with Circumflex
U+00CB
Ë
Latin Capital Letter E with Diaeresis
U+00CC
Ì
Latin Capital Letter I with Grave
U+00CD
Í
Latin Capital Letter I with Acute
U+00CE
Î
Latin Capital Letter I with Circumflex
U+00CF
Ï
Latin Capital Letter I with Diaeresis
U+00D0
Ð
Latin Capital Letter Eth
U+00D1
Ñ
Latin Capital Letter N with Tilde
U+00D2
Ò
Latin Capital Letter O with Grave
U+00D3
Ó
Latin Capital Letter O with Acute
U+00D4
Ô
Latin Capital Letter O with Circumflex
U+00D5
Õ
Latin Capital Letter O with Tilde
U+00D6
Ö
Latin Capital Letter O with Diaeresis
U+00D7
×
Multiplication Sign
U+00D8
Ø
Latin Capital Letter O with Stroke
U+00D9
Ù
Latin Capital Letter U with Grave
U+00DA
Ú
Latin Capital Letter U with Acute
U+00DB
Û
Latin Capital Letter U with Circumflex
U+00DC
Ü
Latin Capital Letter U with Diaeresis
U+00DD
Ý
Latin Capital Letter Y with Acute
U+00DE
Þ
Latin Capital Letter Thorn
U+00DF
ß
Latin Small Letter Sharp S
U+00E0
à
Latin Small Letter A with Grave
U+00E1
á
Latin Small Letter A with Acute
U+00E2
â
Latin Small Letter A with Circumflex
U+00E3
ã
Latin Small Letter A with Tilde
U+00E4
ä
Latin Small Letter A with Diaeresis
U+00E5
å
Latin Small Letter A with Ring Above
U+00E6
æ
Latin Small Letter Ae
U+00E7
ç
Latin Small Letter C with Cedilla
U+00E8
è
Latin Small Letter E with Grave
U+00E9
é
Latin Small Letter E with Acute
U+00EA
ê
Latin Small Letter E with Circumflex
U+00EB
ë
Latin Small Letter E with Diaeresis
U+00EC
ì
Latin Small Letter I with Grave
U+00ED
í
Latin Small Letter I with Acute
U+00EE
î
Latin Small Letter I with Circumflex
U+00EF
ï
Latin Small Letter I with Diaeresis
U+00F0
ð
Latin Small Letter Eth
U+00F1
ñ
Latin Small Letter N with Tilde
U+00F2
ò
Latin Small Letter O with Grave
U+00F3
ó
Latin Small Letter O with Acute
U+00F4
ô
Latin Small Letter O with Circumflex
U+00F5
õ
Latin Small Letter O with Tilde
U+00F6
ö
Latin Small Letter O with Diaeresis
U+00F7
÷
Division Sign
U+00F8
ø
Latin Small Letter O with Stroke
U+00F9
ù
Latin Small Letter U with Grave