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  • UpperCaseQ[ string ] yields True if all the characters in the string are upper-case letters, and yields False otherwise.
  • UpperCaseQ treats both ordinary and special characters.
  • See the Mathematica book: Section 2.7.4.
  • See also: LowerCaseQ, LetterQ, ToUpperCase, ToCharacterCode.

    Further Examples

    A space is not an upper-case character.