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

False$Failed

Null

FilledSmallSquareNull is a symbol used to indicate the absence of an expression or a result. When it appears as an output expression, no output is printed.

FilledSmallSquare; ; ... ; ; returns Null, and prints no output.

FilledSmallSquare Expressions like f[,,] are interpreted to have Null between each pair of adjacent commas.

Further Examples

False$Failed