ID Start - No

Unicode Version 18.0

No is a designation indicating that a character cannot begin an identifier in programming languages or text processing systems. This value applies to characters that are not letters, such as digits, punctuation marks, symbols, or control characters, which are excluded from starting a valid identifier. For example, the digit “3” or the hyphen “-” would receive a “No” value, meaning any attempt to use them as the first character of a variable, function name, or similar token would be invalid. This restriction ensures that identifiers follow consistent, predictable syntax rules, avoiding ambiguity with numeric literals or operators. The “No” value is thus a fundamental gatekeeper, defining the boundary between permissible and impermissible initial characters in lexical analysis.

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Small Left Curly Bracket

Small Right Curly Bracket

Small Left Tortoise Shell Bracket

Small Right Tortoise Shell Bracket

Small Number Sign

Small Ampersand

Small Plus Sign

Small Hyphen-Minus

Small Less-than Sign

Small Greater-than Sign

Small Equals Sign

Small Reverse Solidus

Small Dollar Sign

Small Percent Sign

Small Commercial At

Zero Width No-Break Space

Fullwidth Exclamation Mark

Fullwidth Quotation Mark

Fullwidth Number Sign

Fullwidth Dollar Sign

Fullwidth Percent Sign

Fullwidth Ampersand

Fullwidth Apostrophe

Fullwidth Left Parenthesis

Fullwidth Right Parenthesis

Fullwidth Asterisk

Fullwidth Plus Sign

Fullwidth Comma

Fullwidth Hyphen-Minus

Fullwidth Full Stop

Fullwidth Solidus

Fullwidth Digit Zero

Fullwidth Digit One

Fullwidth Digit Two

Fullwidth Digit Three

Fullwidth Digit Four

Fullwidth Digit Five

Fullwidth Digit Six

Fullwidth Digit Seven

Fullwidth Digit Eight

Fullwidth Digit Nine

Fullwidth Colon

Fullwidth Semicolon

Fullwidth Less-than Sign

Fullwidth Equals Sign

Fullwidth Greater-than Sign

Fullwidth Question Mark

Fullwidth Commercial At

Fullwidth Left Square Bracket

Fullwidth Reverse Solidus

Fullwidth Right Square Bracket

Fullwidth Circumflex Accent

Fullwidth Low Line

Fullwidth Grave Accent

Fullwidth Left Curly Bracket

Fullwidth Vertical Line

Fullwidth Right Curly Bracket

Fullwidth Tilde

Fullwidth Left White Parenthesis

Fullwidth Right White Parenthesis

Halfwidth Ideographic Full Stop

Halfwidth Left Corner Bracket

Halfwidth Right Corner Bracket

Halfwidth Ideographic Comma

Halfwidth Katakana Middle Dot

Fullwidth Cent Sign

Fullwidth Pound Sign

Fullwidth Not Sign

Fullwidth Macron

Fullwidth Broken Bar

Fullwidth Yen Sign

Fullwidth Won Sign

Halfwidth Forms Light Vertical

Halfwidth Leftwards Arrow

Halfwidth Upwards Arrow

Halfwidth Rightwards Arrow

Halfwidth Downwards Arrow

Halfwidth Black Square

Halfwidth White Circle

Interlinear Annotation Anchor

Interlinear Annotation Separator

Interlinear Annotation Terminator

Object Replacement Character

Replacement Character

Aegean Word Separator Line

Aegean Word Separator Dot

Aegean Check Mark

Aegean Number One

Aegean Number Two

Aegean Number Three

Aegean Number Four

Aegean Number Five

Aegean Number Six

Aegean Number Seven

Aegean Number Eight

Aegean Number Nine

Aegean Number Ten

Aegean Number Twenty

Aegean Number Thirty

Aegean Number Forty

Aegean Number Fifty

Aegean Number Sixty

Aegean Number Seventy

Aegean Number Eighty

Aegean Number Ninety

Aegean Number One Hundred

Aegean Number Two Hundred

Aegean Number Three Hundred

Aegean Number Four Hundred

Aegean Number Five Hundred

Aegean Number Six Hundred

Aegean Number Seven Hundred

Aegean Number Eight Hundred

Aegean Number Nine Hundred

Aegean Number One Thousand

Aegean Number Two Thousand

Aegean Number Three Thousand

Aegean Number Four Thousand

Aegean Number Five Thousand

Aegean Number Six Thousand

Aegean Number Seven Thousand

Aegean Number Eight Thousand

Aegean Number Nine Thousand

Aegean Number Ten Thousand

Aegean Number Twenty Thousand

Aegean Number Thirty Thousand

Aegean Number Forty Thousand

Aegean Number Fifty Thousand

Aegean Number Sixty Thousand

Aegean Number Seventy Thousand

Aegean Number Eighty Thousand

Aegean Number Ninety Thousand

Aegean Weight Base Unit

Aegean Weight First Subunit

Aegean Weight Second Subunit

Aegean Weight Third Subunit

Aegean Weight Fourth Subunit

Aegean Dry Measure First Subunit

Aegean Liquid Measure First Subunit

Aegean Measure Second Subunit

Aegean Measure Third Subunit

Greek One Half Sign

Greek One Half Sign Alternate Form

Greek Two Thirds Sign

Greek Three Quarters Sign

Greek Year Sign

Greek Talent Sign

Greek Drachma Sign

Greek Obol Sign

Greek Two Obols Sign

Greek Three Obols Sign

Greek Four Obols Sign

Greek Five Obols Sign

Greek Metretes Sign

Greek Kyathos Base Sign

Greek Litra Sign

Greek Ounkia Sign

Greek Xestes Sign

Greek Artabe Sign

Greek Aroura Sign

Greek Gramma Sign

Greek Tryblion Base Sign

Greek Zero Sign

Greek One Quarter Sign

Greek Sinusoid Sign

Greek Indiction Sign

Roman Sextans Sign

Roman Uncia Sign

Roman Semuncia Sign

Roman Sextula Sign

Roman Dimidia Sextula Sign

Roman Siliqua Sign

Roman Denarius Sign

Roman Quinarius Sign

Roman Sestertius Sign

Roman Dupondius Sign

Roman Centurial Sign

Greek Symbol Tau Rho

Phaistos Disc Sign Pedestrian

Phaistos Disc Sign Plumed Head

Phaistos Disc Sign Tattooed Head

Phaistos Disc Sign Captive

Phaistos Disc Sign Child

Phaistos Disc Sign Woman

Phaistos Disc Sign Helmet

Phaistos Disc Sign Gauntlet

Phaistos Disc Sign Tiara

Phaistos Disc Sign Arrow

Phaistos Disc Sign Bow

Phaistos Disc Sign Shield

Phaistos Disc Sign Club

Phaistos Disc Sign Manacles

Phaistos Disc Sign Mattock

Phaistos Disc Sign Saw

Phaistos Disc Sign Lid

Phaistos Disc Sign Boomerang

Phaistos Disc Sign Carpentry Plane

Phaistos Disc Sign Dolium

Phaistos Disc Sign Comb

Phaistos Disc Sign Sling

Phaistos Disc Sign Column

Phaistos Disc Sign Beehive

Phaistos Disc Sign Ship

Phaistos Disc Sign Horn

Phaistos Disc Sign Hide

Phaistos Disc Sign Bulls Leg

Phaistos Disc Sign Cat

Phaistos Disc Sign Ram

Phaistos Disc Sign Eagle

Phaistos Disc Sign Dove

Phaistos Disc Sign Tunny

Phaistos Disc Sign Bee

Phaistos Disc Sign Plane Tree

Phaistos Disc Sign Vine

Phaistos Disc Sign Papyrus

Phaistos Disc Sign Rosette

Phaistos Disc Sign Lily

Phaistos Disc Sign Ox Back

Phaistos Disc Sign Flute

Phaistos Disc Sign Grater

Phaistos Disc Sign Strainer

Phaistos Disc Sign Small Axe

Phaistos Disc Sign Wavy Band

Phaistos Disc Sign Combining Oblique Stroke

Coptic Epact Thousands Mark

Coptic Epact Digit One

Coptic Epact Digit Two

Coptic Epact Digit Three

Coptic Epact Digit Four

Coptic Epact Digit Five

Coptic Epact Digit Six

Coptic Epact Digit Seven

Coptic Epact Digit Eight

Coptic Epact Digit Nine

Coptic Epact Number Ten

Coptic Epact Number Twenty

Coptic Epact Number Thirty

Coptic Epact Number Forty

Coptic Epact Number Fifty

Coptic Epact Number Sixty

Coptic Epact Number Seventy

Coptic Epact Number Eighty

Coptic Epact Number Ninety

Coptic Epact Number One Hundred

Coptic Epact Number Two Hundred

Coptic Epact Number Three Hundred

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