command line param to keep FO file in PDF output?

Mark Giffin <[email protected]> Wed, 3 Mar 2021 15:14:49 -0800
Newsgroups gmane.text.docbook.apps
Message-ID <[email protected]>
I'm using DocBook XSL and I'm trying to save the XSL-FO file from PDF 
output. Is there a parameter for this?

Thanks,
Mark