I have been having trouble printing pdf documents from Okular on my computer. The printer on my network can print documents double sided (duplex) automatically, and so I set up the defaults for the printer under System Settings to be double sided. Things automatically print double sided when I print from something else (such as Document Viewer) but they don't when I use Okular. I have to choose that option manually every time I print in Okular. Does anyone know how to set the default print options within Okular?