/INDENTATION=n

   Specifies the number of characters to indent from the left margin.
   The default is /INDENTATION=0 (no indentation). The maximum
   value allowed depends on the specified (or default) values for
   /PAPER_SIZE and /ORIENTATION.

   /PAPER_SIZE   /ORIENTATION   Maximum value for /INDENTATION
   LETTER        PORTRAIT                 39
   A4            PORTRAIT                 38
   LETTER        LANDSCAPE                65
   A4            LANDSCAPE                67