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  sxLog():

  Syntax:     sxLog( [<xLog>] )

  Returns:    A logical value based

  Description:  This function is primarily intended for use in creating
                a template for multi-key, free-format index files.

                You can also use this function as a generic conversion
                functions for insuring that a logical value is returned.
                For example:

                  ? sxLog( .T. )    // Returns .T.
                  ? sxLog( "T" )    // Returns .T.
                  ? sxLog( "Y" )    // Returns .T.
                  ? sxLog( 1 )      // Returns .T.

                  ? sxLog( .F. )    // Returns .F.
                  ? sxLog( "F" )    // Returns .F.
                  ? sxLog( "N" )    // Returns .F.
                  ? sxLog( 0 )      // Returns .F.


  NOTE: Just by using this function in your INDEX command, you will create
        an empty Multi-Keyed, Free-Format RYO index.  The INDEX command's
        EMPTY clause is not needed and will have no effect if used.


   Example:  See the examples for sxChar() and sxNum() for examples that
             can also be applied to the sxLog() function.