| IdeographicDescriptionCharacters | Unicode.Char.General.Blocks |
| IdeographicSymbolsAndPunctuation | Unicode.Char.General.Blocks |
| ImperialAramaic | Unicode.Char.General.Blocks |
| IndicSiyaqNumbers | Unicode.Char.General.Blocks |
| InitialQuote | Unicode.Char.General, Unicode.Char |
| InscriptionalPahlavi | Unicode.Char.General.Blocks |
| InscriptionalParthian | Unicode.Char.General.Blocks |
| integerValue | Unicode.Char.Numeric, Unicode.Char |
| intToDigit | Unicode.Char.Numeric, Unicode.Char |
| IPAExtensions | Unicode.Char.General.Blocks |
| isAlpha | Unicode.Char.General.Compat, Unicode.Char |
| isAlphabetic | Unicode.Char.General, Unicode.Char |
| isAlphaNum | Unicode.Char.General, Unicode.Char |
| isAscii | Unicode.Char.General, Unicode.Char |
| isAsciiLower | Unicode.Char.General, Unicode.Char |
| isAsciiUpper | Unicode.Char.General, Unicode.Char |
| isCombining | Unicode.Char.Normalization, Unicode.Char |
| isCombiningStarter | Unicode.Char.Normalization, Unicode.Char |
| isControl | Unicode.Char.General, Unicode.Char |
| isDecomposable | Unicode.Char.Normalization, Unicode.Char |
| isDigit | Unicode.Char.Numeric, Unicode.Char |
| isHangul | Unicode.Char.General, Unicode.Char |
| isHangulLV | Unicode.Char.General, Unicode.Char |
| isHexDigit | Unicode.Char.Numeric, Unicode.Char |
| isIDContinue | Unicode.Char.Identifiers, Unicode.Char |
| isIDStart | Unicode.Char.Identifiers, Unicode.Char |
| isJamo | Unicode.Char.General, Unicode.Char |
| isLatin1 | Unicode.Char.General, Unicode.Char |
| isLetter | |
| 1 (Function) | Unicode.Char.General, Unicode.Char |
| 2 (Function) | Unicode.Char.General.Compat |
| isLower | |
| 1 (Function) | Unicode.Char.Case.Compat |
| 2 (Function) | Unicode.Char.Case, Unicode.Char |
| isLowerCase | Unicode.Char.Case, Unicode.Char |
| isMark | Unicode.Char.General, Unicode.Char |
| isNumber | |
| 1 (Function) | Unicode.Char.Numeric.Compat |
| 2 (Function) | Unicode.Char.Numeric, Unicode.Char |
| isNumeric | Unicode.Char.Numeric, Unicode.Char |
| isOctDigit | Unicode.Char.Numeric, Unicode.Char |
| isPatternSyntax | Unicode.Char.Identifiers, Unicode.Char |
| isPatternWhitespace | Unicode.Char.Identifiers, Unicode.Char |
| isPrint | Unicode.Char.General, Unicode.Char |
| isPunctuation | Unicode.Char.General, Unicode.Char |
| isSeparator | Unicode.Char.General, Unicode.Char |
| isSpace | |
| 1 (Function) | Unicode.Char.General, Unicode.Char |
| 2 (Function) | Unicode.Char.General.Compat |
| isSymbol | Unicode.Char.General, Unicode.Char |
| isUpper | |
| 1 (Function) | Unicode.Char.Case.Compat |
| 2 (Function) | Unicode.Char.Case, Unicode.Char |
| isUpperCase | Unicode.Char.Case, Unicode.Char |
| isWhiteSpace | Unicode.Char.General, Unicode.Char |
| isXIDContinue | Unicode.Char.Identifiers, Unicode.Char |
| isXIDStart | Unicode.Char.Identifiers, Unicode.Char |