RMAC options specify the   destination  of  the   output   files.
  Replace d with the destination drive letter for the output files.

                    Option         d=output option

            R- drive for REL file  (A-O, Z)
            S- drive for SYM file  (A-O, X, P, Z)
            P- drive for PRN file  (A-O, X, P, Z)

            A-O specifies drive A-O.
            X means output to the console.
            P means output to the printer.
            Z means zero output.