Manual duplex printing using a print dialog

If a user selects duplex printing, the printer prints the first half of the pages. After that a print dialog is shown which illustrates how to put the stack of paper back into the tray. Then the printer does the rest. This function should also be combinable with printing multiple pages on one side. An example for such a dialog can be found here: http://www.students.uni-mainz.de/danielku/duplex.jpg