DEVICE:PostScript

paper_sizes

 The optional parameter refers to paper sizes:  A  is  8.50 x 11.00 in
                                                B  is 11.00 x 17.00 in
                                                C  is 17.00 x 22.00 in
                                                D  is 22.00 x 34.00 in
                                                E  is 34.00 x 44.00 in
                                                A4 is 21.00 x 29.70 cm

plotting_units

 paper                     LANDSCAPE            PORTRAIT
 size   units         horizontal vertical  horizontal vertical
 -------------------------------------------------------------
   A    centimeters   25.00      19.00     19.00      25.00
        inches         9.84       7.48      7.48       9.84
   B    centimeters   40.64      25.40     25.40      40.64
        inches        16.00      10.00     10.00      16.00
   C    centimeters   53.34      40.64     40.64      53.34
        inches        21.00      16.00     16.00      21.00
   D    centimeters   83.82      53.34     53.34      83.82
        inches        33.00      21.00     21.00      33.00
   E    centimeters  109.22      83.82     83.82     109.22
        inches        43.00      33.00     33.00      43.00
   A4   centimeters   27.16      18.46     18.46      27.16
        inches        10.69       7.27      7.27      10.69

FLIP

 If the \FLIP qualifier is used, the drawing will come out upside-down
 on the paper. This is not mirror image. This feature is included to
 facilitate the insertion of PostScript plots into TeX or LaTeX documents.