Printing in duplex mode is a function of your printer. You need to select the appropriate duplex mode in your printer driver. To access the printer driver user interface, click on the "Printer" button on Acrobat's print dialog.
To combine two PDF pages on one printed page, select the "Multiple" function on Acrobat's print dialog:
To combine this with duplex printing, you again have to select the appropriate duplex mode using the printer driver user interface.
Karl Heinz Kremer
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