"𝔒" U+1D512 Mathematical Fraktur Capital O

The codepoint written in hexadecimal, as used in the standard U+XXXX notation.

Whether this character is one of the plain ASCII characters used to write hexadecimal numbers (0-9, A-F, a-f).

Whether this character is considered a letter.

Whether this character is one of the small set of invisible codes used to control bidirectional text layout.

Whether this character's glyph should be flipped horizontally when displayed in right-to-left text.

Whether this character is deliberately excluded from being produced by Unicode normalization.

Whether this character is skipped over when software decides whether nearby letters should be treated as uppercase or lowercase.

Whether casefolding (used for case-insensitive comparison) changes this character.

Whether any form of case mapping changes this character.

Whether this character changes when both compatibility normalization and casefolding are applied together.

Whether converting this character to lowercase actually changes it.

Whether converting this character to titlecase actually changes it.

Whether converting this character to uppercase actually changes it.

Whether this character has a case at all (uppercase, lowercase, or titlecase).

Whether this character is excluded from being produced by any form of Unicode normalization, including indirectly.

Whether this character should typically be invisible and have no effect on layout when a program doesn't specifically support it.

Whether this character is classified as a dash or hyphen-like punctuation mark.

Whether the Unicode Standard discourages using this character in new text.

Whether this character is a diacritical mark that modifies the meaning or sound of a neighboring character.

Whether this emoji character can accept a modifier, such as a skin-tone marker.

Whether this character is used as a building block inside a multi-part emoji sequence.

Whether this character can modify a preceding emoji, such as a skin-tone marker.

Whether this character displays as a colorful emoji by default, rather than as plain text.

Whether this character is recognized as an emoji.

Whether this character extends or repeats the value or shape of the preceding character.

Whether this character is treated as a pictograph for text-segmentation purposes, whether or not it has an emoji presentation.

The category used by text-processing software to decide where one user-perceived character ends and another begins.

Whether this character can act as the base of a grapheme cluster — a unit of text a user perceives as a single character.

Whether this character extends a grapheme cluster rather than starting a new one, as combining marks do.

Whether this character is used to write hexadecimal numbers (0-9, A-F, a-f, and their fullwidth forms).

Whether this character is allowed to appear after the first character of a programming-language identifier (like a variable name).

Whether this character is allowed to start a programming-language identifier (like a variable name).

Whether this character combines two ideographs in an Ideographic Description Sequence.

Whether this character combines three ideographs in an Ideographic Description Sequence.

Whether this character modifies a single ideograph in an Ideographic Description Sequence.

Mathematical identifier property allowing specific math symbols to continue inside an identifier.

Mathematical identifier property allowing specific math symbols to serve as the starting character of an identifier.

Whether this character is classified as an ideograph, such as the CJK characters used in Chinese, Japanese, and Korean.

Property used in grapheme cluster boundary determination for Indic scripts (e.g., Consonant, Linker, Extender).

Where this character is positioned relative to a base consonant in Indic and related scripts (e.g. above, below, left, or right).

The role this character plays within a syllable in Indic and related scripts (e.g. consonant, vowel sign, or virama).

Format control characters used to explicitly manipulate cursive joining behaviors, such as ZWNJ and ZWJ.

Marks a small group of Thai and Lao vowel characters that are typed before the consonant they belong to, out of visual order.

Whether this character is a lowercase letter.

Binary property indicating whether a character is a combining mark that functions as a modifier.

Whether this character is classified as a mathematical symbol.

Whether this codepoint is permanently reserved as a noncharacter and will never be assigned to an actual character.

A fast hint for whether this character is already valid in Normalization Form C, without needing a full check.

A fast hint for whether this character is already valid in Normalization Form D, without needing a full check.

Mapping used to transform a character under NFKC (Compatibility Decomposition) followed by Full Case Folding.

A fast hint for whether this character is already valid in Normalization Form KC, without needing a full check.

Mapping used to transform a character under NFKC (Compatibility Decomposition) followed by Simple Case Folding.

A fast hint for whether this character is already valid in Normalization Form KD, without needing a full check.

Characters treated as alphabetic (letters) in algorithms, but not categorized under standard Letter categories (L) or Letter Numbers (Nl).

Characters recommended to be ignored by default in display (such as format controls), not covered by standard ignorable categories.

Characters used as grapheme cluster extenders, excluding standard Nonspacing Marks (Mn) and Enclosing Marks (Me).

Characters that are allowed in the body of an identifier for backward compatibility, despite not meeting standard identifier rules.

Characters that are allowed at the start of an identifier for backward compatibility, despite not being letters or currency symbols.

Characters that are treated as lowercase in Unicode operations, but do not have the General Category value of Ll (Letter, lowercase).

Characters used as mathematical symbols, but not designated with the General Category Sm (Symbol, math).

Characters that are treated as uppercase in Unicode operations, but do not have the General Category value of Lu (Letter, uppercase).

Whether this character is a mark that attaches to the following character, such as certain currency or exception signs.

Is a binary Unicode property used to mark characters that have special meaning in pattern languages (like regular expressions, IDNA processing, and other parsing systems)

It explicitly defines a small, stable set of characters that computer languages, lexers (like Rust), and regular expression engines treat as syntax-separating whitespace.

Whether this character is used to quote or mark off speech and titles, such as a quotation mark or guillemet.

Whether this character is one of the 26 letters used in pairs to represent country flags (e.g. in flag emoji).

Whether this character is used as a CJK radical or postfix component in describing the structure of ideographs.

The category used by text-processing software to decide where one sentence ends and another begins.

Whether this character has a dot that disappears when an accent is placed on top of it, like the dot on a lowercase i or j.

Whether this character can mark the end of a sentence, like a period or question mark.

Whether this character is punctuation that typically marks the end of a sentence or phrase.

Whether this character is one of the unified CJK ideographs, as opposed to a compatibility or radical variant.

Whether this character is an uppercase letter.

Whether this character is used to select a specific visual variant of the preceding character.

The category used by text-processing software to decide where one word ends and another begins.

Whether this character is treated as a space, tab, line break, or other blank separator.

A refined version of ID Continue that guarantees identifiers stay stable and well-formed after Unicode normalization.

A refined version of ID Start that guarantees identifiers stay stable and well-formed after Unicode normalization.

The version of the Unicode Standard in which this codepoint was first assigned.

How this character behaves in bidirectional text, which mixes left-to-right and right-to-left scripts.

The named range of codepoints this character belongs to, grouping related characters together.

The codepoint of the bracket that pairs with this one.

Whether this character is an opening or closing bracket for the purpose of bidirectional bracket handling.

A number used to decide the correct stacking order of combining marks (like accents) around a base character. Most numbers in the 10–133 range are just reordering slots (mainly for Hebrew and Arabic) without individual names.

Maps characters to a common canonical form to enable language-neutral, case-insensitive string comparison.

The sequence of codepoints this character decomposes into, if any.

Describes how this character can be broken down into other characters, e.g. as a canonical equivalent or a compatibility variant.

How wide this character is typically rendered in East Asian fixed-width fonts and terminals.

The broad classification of the character, such as letter, digit, punctuation, symbol, or control.

The role this character plays in forming a Korean Hangul syllable block, such as a leading, vowel, or trailing component.

Which family of letterforms this character joins with when written in a cursive script such as Arabic.

How this character connects to the characters next to it in a cursive script such as Arabic.

The category used to decide whether a line of text is allowed to wrap before or after this character.

The lowercase equivalent of this character, when it maps to exactly one other character.

The official, unique name given to this character by the Unicode Standard.

Whether this character has a numeric meaning, and if so, what kind (e.g. a decimal digit or a fraction).

The numeric value this character represents, if it has one.

The primary writing system this character is used in.

A single-character case-folded form of this character, used for case-insensitive comparisons.

Other writing systems that also use this character, beyond its primary script.

The lowercase equivalent of this character, when it maps to exactly one other character.

The titlecase form of this character, when it maps to exactly one other character.

The uppercase equivalent of this character, when it maps to exactly one other character.

The titlecase form of this character, when it maps to exactly one other character.

The uppercase equivalent of this character, when it maps to exactly one other character.

The default orientation of this character when text is set vertically.