Syntax:        TXLMARGIN(<expN>)

     Purpose:       Designates the setting of the left margin of the
                    logical page in columns.

     Argument:      <expN> is column to set as the left margin.

     Returns:        0  Successful
                     1  <expN> not numeric

     Usage:         TXLMARGIN() is used to set your page left margin.

     Example:       * Set left margin to column 10
                    _ret_code = TXLMARGIN(10)

     See Also:      TXRMARGIN(), TXTMARGIN(), TXSETLPI()