Print on double side (duplex) using word.def in Extend 9.2.5

I am generating a word file replacing the fields using the @ variable @ from acucobol extend 9.2.5 and sending it to print, I currently use the compando to print MODIFY word-doc @PrintOut () but now I need to print the document in a printer for both faces but I have not given how to do it or what command to use. I would appreciate the help.