[texhax] Setting PDF META Data

[Jerry]

I presently use "\pdfinfo" to set some of the META data on my files.

\pdfinfo{
	/Author (Author)
	/Title  (Document Title)
	/CreationDate (D:20170323153100) %YYYYMMDDHHMMSS
	/ModDate (\pdfcreationdate)
	/Subject (Subject of document)
	/Keywords (Keywords)
}

Is there any command that I can use to set printing preferences. Things
like Duplex printing or Fast Web Viewing?

Presently I use Adobe Acrobat DC to save the file in PDF/X format. Is
there anyway to do that from within LaTeX itself?

Thanks :)

-- 
Jerry