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Null

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Null
is a symbol used to indicate the absence of an expression or a result. It is not displayed in ordinary output.

When Null appears as a complete output expression, no output is printed.
  • e1;e2;...;ek; returns Null, and prints no output.
  • Expressions like f[e1, , e2] are interpreted to have Null between each pair of adjacent commas.
  • Null represents the absence of content or elements in such constructs as InputField or Grid.
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