Bidirectional Class - Boundary Neutral
Unicode Version 18.0
Boundary Neutral is a special value that makes a character invisible to the bidirectional algorithm’s rule for determining paragraph direction and segment boundaries. Such characters, typically formatting controls like zero-width joiners or directional marks, neither create nor break the logical ordering of surrounding text, so they do not affect where line breaks or embedding levels change. Instead, they act as placeholders that ignore directionality, allowing adjacent characters to behave as if the neutral character were absent. This ensures that invisible markup does not interfere with the visual order of mixed left-to-right and right-to-left scripts, while still permitting the character to carry other metadata.
1-247 of 181 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+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+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+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+00AD
Soft Hyphen
U+180E
Mongolian Vowel Separator
U+200B
Zero Width Space
U+200C
Zero Width Non-Joiner
U+200D
Zero Width Joiner
U+2060
Word Joiner
U+2061
Function Application
U+2062
Invisible Times
U+2063
Invisible Separator
U+2064
Invisible Plus
U+206A
Inhibit Symmetric Swapping
U+206B
Activate Symmetric Swapping
U+206C
Inhibit Arabic Form Shaping
U+206D
Activate Arabic Form Shaping
U+206E
National Digit Shapes
U+206F
Nominal Digit Shapes
U+FDD0
Arabic Presentation Forms-A
U+FDD1
Arabic Presentation Forms-A
U+FDD2
Arabic Presentation Forms-A
U+FDD3
Arabic Presentation Forms-A
U+FDD4
Arabic Presentation Forms-A
U+FDD5
Arabic Presentation Forms-A
U+FDD6
Arabic Presentation Forms-A
U+FDD7
Arabic Presentation Forms-A
U+FDD8
Arabic Presentation Forms-A
U+FDD9
Arabic Presentation Forms-A
U+FDDA
Arabic Presentation Forms-A
U+FDDB
Arabic Presentation Forms-A
U+FDDC
Arabic Presentation Forms-A
U+FDDD
Arabic Presentation Forms-A
U+FDDE
Arabic Presentation Forms-A
U+FDDF
Arabic Presentation Forms-A
U+FDE0
Arabic Presentation Forms-A
U+FDE1
Arabic Presentation Forms-A
U+FDE2
Arabic Presentation Forms-A
U+FDE3
Arabic Presentation Forms-A
U+FDE4
Arabic Presentation Forms-A
U+FDE5
Arabic Presentation Forms-A
U+FDE6
Arabic Presentation Forms-A
U+FDE7
Arabic Presentation Forms-A
U+FDE8
Arabic Presentation Forms-A
U+FDE9
Arabic Presentation Forms-A
U+FDEA
Arabic Presentation Forms-A
U+FDEB
Arabic Presentation Forms-A
U+FDEC
Arabic Presentation Forms-A
U+FDED
Arabic Presentation Forms-A
U+FDEE
Arabic Presentation Forms-A
U+FDEF
Arabic Presentation Forms-A
U+FEFF
Zero Width No-Break Space
U+FFFE
Specials
U+FFFF
Specials
U+1BCA0
Shorthand Format Letter Overlap
U+1BCA1
Shorthand Format Continuing Overlap
U+1BCA2
Shorthand Format down Step
U+1BCA3
Shorthand Format Up Step
U+1D173
Musical Symbol Begin Beam
U+1D174
Musical Symbol End Beam
U+1D175
Musical Symbol Begin Tie
U+1D176
Musical Symbol End Tie
U+1D177
Musical Symbol Begin Slur
U+1D178
Musical Symbol End Slur
U+1D179
Musical Symbol Begin Phrase
U+1D17A
Musical Symbol End Phrase
U+1FFFE
No Block
U+1FFFF
No Block
U+2FFFE
No Block
U+2FFFF
No Block
U+3FFFE
No Block
U+3FFFF
No Block
U+4FFFE
No Block
U+4FFFF
No Block
U+5FFFE
No Block
U+5FFFF
No Block
U+6FFFE
No Block
U+6FFFF
No Block
U+7FFFE
No Block
U+7FFFF
No Block
U+8FFFE
No Block
U+8FFFF
No Block
U+9FFFE
No Block
U+9FFFF
No Block
U+AFFFE
No Block
U+AFFFF
No Block
U+BFFFE
No Block
U+BFFFF
No Block
U+CFFFE
No Block
U+CFFFF
No Block
U+DFFFE
No Block
U+DFFFF
No Block
U+E0001
Language Tag
U+E0020
Tag Space
U+E0021
Tag Exclamation Mark
U+E0022
Tag Quotation Mark
U+E0023
Tag Number Sign
U+E0024
Tag Dollar Sign
U+E0025
Tag Percent Sign
U+E0026
Tag Ampersand
U+E0027
Tag Apostrophe
U+E0028
Tag Left Parenthesis
U+E0029
Tag Right Parenthesis
U+E002A
Tag Asterisk
U+E002B
Tag Plus Sign
U+E002C
Tag Comma
U+E002D
Tag Hyphen-Minus
U+E002E
Tag Full Stop
U+E002F
Tag Solidus
U+E0030
Tag Digit Zero
U+E0031
Tag Digit One
U+E0032
Tag Digit Two
U+E0033
Tag Digit Three
U+E0034
Tag Digit Four
U+E0035
Tag Digit Five
U+E0036
Tag Digit Six
U+E0037
Tag Digit Seven
U+E0038
Tag Digit Eight
U+E0039
Tag Digit Nine
U+E003A
Tag Colon
U+E003B
Tag Semicolon
U+E003C
Tag Less-than Sign
U+E003D
Tag Equals Sign
U+E003E
Tag Greater-than Sign
U+E003F
Tag Question Mark
U+E0040
Tag Commercial At
U+E0041
Tag Latin Capital Letter A
U+E0042
Tag Latin Capital Letter B
U+E0043
Tag Latin Capital Letter C
U+E0044
Tag Latin Capital Letter D
U+E0045
Tag Latin Capital Letter E
U+E0046
Tag Latin Capital Letter F
U+E0047
Tag Latin Capital Letter G
U+E0048
Tag Latin Capital Letter H
U+E0049
Tag Latin Capital Letter I
U+E004A
Tag Latin Capital Letter J
U+E004B
Tag Latin Capital Letter K
U+E004C
Tag Latin Capital Letter L
U+E004D
Tag Latin Capital Letter M
U+E004E
Tag Latin Capital Letter N
U+E004F
Tag Latin Capital Letter O
U+E0050
Tag Latin Capital Letter P
U+E0051
Tag Latin Capital Letter Q
U+E0052
Tag Latin Capital Letter R
U+E0053
Tag Latin Capital Letter S
U+E0054
Tag Latin Capital Letter T
U+E0055
Tag Latin Capital Letter U
U+E0056
Tag Latin Capital Letter V
U+E0057
Tag Latin Capital Letter W
U+E0058
Tag Latin Capital Letter X
U+E0059
Tag Latin Capital Letter Y
U+E005A
Tag Latin Capital Letter Z
U+E005B
Tag Left Square Bracket
U+E005C
Tag Reverse Solidus
U+E005D
Tag Right Square Bracket
U+E005E
Tag Circumflex Accent
U+E005F
Tag Low Line
U+E0060
Tag Grave Accent
U+E0061
Tag Latin Small Letter A
U+E0062
Tag Latin Small Letter B
U+E0063
Tag Latin Small Letter C
U+E0064
Tag Latin Small Letter D
U+E0065
Tag Latin Small Letter E
U+E0066
Tag Latin Small Letter F
U+E0067
Tag Latin Small Letter G
U+E0068
Tag Latin Small Letter H
U+E0069
Tag Latin Small Letter I
U+E006A
Tag Latin Small Letter J
U+E006B
Tag Latin Small Letter K
U+E006C
Tag Latin Small Letter L
U+E006D
Tag Latin Small Letter M
U+E006E
Tag Latin Small Letter N
U+E006F
Tag Latin Small Letter O
U+E0070
Tag Latin Small Letter P
U+E0071
Tag Latin Small Letter Q
U+E0072
Tag Latin Small Letter R
U+E0073
Tag Latin Small Letter S
U+E0074
Tag Latin Small Letter T
U+E0075
Tag Latin Small Letter U
U+E0076
Tag Latin Small Letter V
U+E0077
Tag Latin Small Letter W
U+E0078
Tag Latin Small Letter X
U+E0079
Tag Latin Small Letter Y
U+E007A
Tag Latin Small Letter Z
U+E007B
Tag Left Curly Bracket
U+E007C
Tag Vertical Line
U+E007D
Tag Right Curly Bracket
U+E007E
Tag Tilde
U+E007F
Cancel Tag
U+EFFFE
No Block
U+EFFFF
No Block
U+FFFFE
Supplementary Private Use Area-A
U+FFFFF
Supplementary Private Use Area-A
U+10FFFE
Supplementary Private Use Area-B
U+10FFFF
Supplementary Private Use Area-B
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