.NOT.
 Logical NOT--unary                              (Logical)
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 Syntax

     ! <lCondition>
     .NOT. <lCondition>

 Type

     Logical

 Operands

     <lCondition> is a logical expression to not.

 Description

     The not (!) operator is a unary logical operator that returns the
     logical inverse of <lCondition>.

 Examples

     .  This example shows .NOT. results using different operands:

        ? ! (.T.)               // Result: .F.
        ? ! 1 > 2               // Result: .T.
        ? .NOT. 1 > 2           // Result: .T.