PDFX refinement: when using Email.Type,4 the default values for the these options are changed as follows:
//PDFX,Save.ShowSaveDialog,0
//PDFX,Save.WhenExists,overwrite
Also, for Email.Type 4 through 6, following default is now set:
//PDFX,Save.Type,2
These new defaults eliminate a common source of problems or annoyances when forgetting to specify them.
