Free Adobe version does not show “print on both sides of paper” option.  Called Adobe.  Said free version does not have access to telephone support.  Called Apple who was/is always happy to help and often goes well beyond the call of duty to assist frazzled/valued customers and never afraid of the effects of consumer tech burnout.  Apple recommended using their Preview application to print Adobe generated .pdfs.  Works like a fricken charm.  Thanks, Apple. ... View more