PAGESPERSHEET=value

      Sets the number of pages that will print per sheet, no
      matter how many page spots are set by the NUMBER_UP parameter.
      The NUMBER_UP parameter or the GRID layup option determines
      the maximum number of pages you can print for each sheet.
      PAGESPERSHEET determines only the range of page spots to use;
      not their layout.

      You must supply a value to PAGESPERSHEET.  The value must be
      less than the value supplied to the NUMBER_UP parameter value.