Tell me the PJL...
$ foo2hiperc-wrapper testpage.ps | hipercdecode
\033%-12345X@PJL
@PJL RDYMSG DISPLAY = "Unknown"
@PJL SET OKIJOBACCOUNTJOB USERID="Unknown" JOBNAME="Unknown"
@PJL SET OKIAUXJOBINFO DATA="DocumentName=Unknown"
@PJL SET OKIAUXJOBINFO DATA="ComputerName=dual.rkkda.org"
@PJL SET OKIAUXJOBINFO DATA="ReceptionTime=00:00:00 2011/06/10"
@PJL SET OKIAUTOTRAYSWITCH=ON
@PJL SET OKIPAPERSIZECHECK=ENABLE
@PJL SET RESOLUTION=600
@PJL SET PAPER=LETTER
@PJL SET OKITRAYSEQUENCE=PAPERFEEDTRAY
@PJL SET OKIPAPERFEED=TRAY1
@PJL SET OKIMEDIATYPE = PLAIN
@PJL SET LPARM:PCL OKIPRINTMARGIN=INCH1D6
@PJL SET COPIES=1
@PJL SET QTY=1
@PJL SET HIPERCEFFECTIVEBLOCKSIZE=4207500
@PJL ENTER LANGUAGE=HIPERC
...snip...