PAPER_ORIENTATION keyword specifies the paper orientation to
    be used in the output PostScript file. The valid values for the
    orientation argument are as follows:

    Keyword         Meaning

    PORTRAIT        The page is oriented so that the larger dimension
                    is parallel to the vertical axis.
    LANDSCAPE       The page is oriented so that the larger dimension
                    is parallel to the horizontal axis.

    The default is PORTRAIT.