This is documentation for Mathematica 4, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)



FilledSmallSquareLetterQ[string] yields True if all the characters in the string are letters, and yields False otherwise.

FilledSmallSquareLetterQ[string] by default gives False if string contains any space or punctuation characters.

FilledSmallSquareLetterQ handles both ordinary and special characters.

FilledSmallSquareLetterQ treats as letters all special characters explicitly listed as letters in the table in Section A.12.1.

FilledSmallSquare In general, LetterQ treats as letters all characters that appear as ordinary text in any language.

FilledSmallSquareLetterQ treats as letters such special characters as , , and .

FilledSmallSquareLetterQ does not treat as letters (\[EmptySet]), (\[HBar]), (\[Angstrom]) or (\[Sum]).

FilledSmallSquare See The Mathematica Book: Section 2.7.4.

FilledSmallSquare See also: DigitQ, UpperCaseQ, LowerCaseQ, CharacterRange.

Further Examples