Syntax:        TXRMARGIN(<expN>)

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

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

     Returns:        0  Successful
                     1  <expN> not numeric

     Usage:         TXRMARGIN() is used to set your page right margin.

     Example:       * Set right margin to column 70
                    _ret_code = TXRMARGIN(70)

     See Also:      TXLMARGIN(), TXTMARGIN(), TXCLRMRG()