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FilledSmallSquare UpperCaseQ[string] yields True if all the characters in the string are upper-case letters, and yields False otherwise.

FilledSmallSquare UpperCaseQ treats both ordinary and special characters.

FilledSmallSquare See Section 2.8.4.

FilledSmallSquare See also: LowerCaseQ, LetterQ, ToUpperCase, ToCharacterCode.

FilledSmallSquare New in Version 2; modified in 3.

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