PAPER_SIZE keyword specifies the size of the paper to be used
    when formatting the resulting PostScript output file. Valid
    values for the size argument are as follows:

    Keyword     Size

    A0          841 x 1189 millimeters (33.13 x 46.85 inches)
    A1          594 x 841 millimeters (23.40 x 33.13 inches)
    A2          420 x 594 millimeters (16.55 x 23.40 inches)
    A3          297 x 420 millimeters (11.70 x 16.55 inches)
    A4          210 x 297 millimeters (8.27 x 11.70 inches)
    A           8.5 x 11 inches (216 x 279 millimeters)
    B           11 x 17 inches (279 x 432 millimeters)
    C           17 x 22 inches (432 x 559 millimeters)
    D           22 x 34 inches (559 x 864 millimeters)
    E           34 x 44 inches (864 x 1118 millimeters)
    LEDGER      11 x 17 inches (279 x 432 millimeters)
    LEGAL       8.5 x 14 inches (216 x 356 millimeters)
    LETTER      8.5 x 11 inches (216 x 279 millimeters)
    LP          13.7 x 11 inches (348 x 279 millimeters)
    VT          8 x 5 inches (203 x 127 millimeters)

    The A paper size (8.5 x 11 inches) is the default.