system "gs -dNOPAUSE -dBATCH -q -r300x300 -dDEVICEWIDTHPOINTS=243 -dDEVICEHEIGHTPOINTS=155 -sDEVICE=pbmraw -sOutputFile=$pbm -f $pdf";
}
+system "pdftk $out.print-front.pdf $out.print-back.pdf cat output $out.print-duplex.pdf";
+
__END__
#system "inkscape --file $out.print.svg --export-pdf $out.pdf";