I appreciated your answer, but when I went to "printing preferences" and checked, I found it was set for single side printing (which is the setting I use most often). When I want to print on both sides (manually) I check that in Wondershare's print dialog window. But, once I do that, any printing that I initiate will be "both sides, manual" unless I go back into Wondershare's print dialog box and uncheck the "both sides manual" box. And, not only does the "both sides, manual" setting persist until manually changed for Wondershare, but it persists for MS Word, MS Excel, Quicken and any other program I print from.
Your principal competitor doesn't do this: printing instruction reverts to the instruction in "printing preferences" automatically when one finishes with the document for which one set the "print both sides manual". I wish Wondershare did this also.