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 FT_FEMPTY()
 Determine if a field is empty, i.e., contains no value.
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 Syntax

      FT_FEMPTY( <xVar> ) -> lVal

 Arguments

     <xVar> may be either a field name or ordinal .DBF position.

 Returns

     <lVal>, a logical indicating if field <xVar> is empty.

 Description

     FT_FEMPTY() checks for the existence of a value in a field.

 Examples

     lEmp:= FT_FEMPTY( "unit_prc" )
     lEmp:= FT_FEMPTY( 2 )
     - or -
     nNum:= FT_FNUM( "unit_prc" )
     lEmp:= FT_FEMPTY( nNum )

 Source: FIELD.PRG

 Author: Steve Kolterman