jEdit

System: jedit4.3pre7, jdk1.5.0_07, RedHat kernel 2.6.9-34.0.1.ELsmp

Printer: HP LaserJet 4600dtn

Bug:
In the "Print..." dialog, under the "Appearance" tab, there are radio
buttons for "One side", "Tumble", or "Duplex" printing.

When I select duplex printing, the printer properly "prints" both sides of
the paper, but the back side is blank. In other words, the front side
prints, the printer retracts the page, and the back side prints; but all
the text is on the front side only.

Other applications (e.g. acroread) print duplex properly using the lpr flag
"-o Duplex=DuplexNoTumble").

How can I find (and fix?) the command jedit uses to print?

Thanks,
Daniel