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voidP()

Syntax

    voidP(variableName)

Description

Function; determines whether the variable specified by `variableName` has any value. If the variable has no value or is `VOID,` this function returns `TRUE`. If the variable has a value other than `VOID`, this function returns `FALSE.`

Example

This statement checks whether the variable `answer` has an initial value:

    put voidP(answer)

See also

`ilk()`, `VOID`