PAGE_ORIENTATION=logical-orientation

    Specifies the orientation of printed output on the logical page.

    Logical-orientation can be PORTRAIT or LANDSCAPE.  If you do not
    specify PAGE_ORIENTATION, it defaults to the page orientation
    associated with the print queue.  If there is no page orientation
    associated with the queue, the default is PAGE_ORIENTATION=PORTRAIT.

    The layup feature uses the page orientation in determining how to
    place the pages on the sheet.  If the DATA_TYPE is POSTSCRIPT and
    the layup feature is not in use, this parameter is ignored.