Workflows do not currently support a print feature. However, the summary activity does support a print button. To print the summary activity, first drag a summary activity into your flow from the palette and then[[#Setup_Key.2FSaved.2FSummary_Fields | then setup summary fields]] to to indicate which form fields to display in the printable summary activity.
It is also possible to add your own print button to any workflow step by adding a message control with &print=true&format=PDF. This custom print button will print the current activity step and not the entire workflow. See [[V4_Using_Forms#Printing_Forms | printing forms]] for for more details on how to add a print message control. Note that this will enable the user to print the current step even if this activity's print property is unchecked.