Plan 9 from Bell Labs’s /n/sources/patch/maybe/lp-post-duplex/readme

Copyright © 2009 Alcatel-Lucent.
Distributed under the Lucent Public License version 1.02.
Download the Plan 9 distribution.


process/post tries to configure the printer for duplex printing by writing
the postscript systemdict; this doesn't work on most printers (without a
password, at least). This patch changes the post driver to emit 
'<< /Duplex true >>' to set duplex mode, in line with the rest of the
process/* drivers.

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