psmandup(1) on Linux
The text 9523852f8292, as Debian 12 (Bookworm) shipped it. The page shows this text now.
print duplex on non duplex printers
Flags it lists
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--back -
--front -
--help -
--no-fix -
--output -
--quiet -
--version -
-b -
-f -
-h -
-n -
-o -
-q -
-v