(Thanks) network/Postscript Printer problem

[Warren Block]

On Sun, 13 Sep 2015, reg at dwf.com wrote:

>
> Thanks to all that responded, I finally got rid of
> a couple of nasty typos, and the printer is working.
>
> I should be able now to put together a couple of
> input filters to do single/double sided printing.

This thread in the forums is a couple of years old, but shows some 
examples of creating a duplex-printing filter:
https://forums.freebsd.org/threads/lpd-print-filters.40651/