If anyone's interested, Postscript printing also works with this method,
assuming the ghostscript support files, also available on Edward Mendelson's
site, are in the vdos directory.
From: Carl Distefano <cld@xxxxxxxxxx>
To: xywrite@xxxxxxxxxxxxx
Sent: Friday, February 10, 2017 11:19 AM
Subject: Re: PDF printing from the command-line again
Harry,
I was able to print by dropping the file on the program icon, but not
from the Xy command line using PDFtoPrinter filename.pdf (I get
"Command is not recognized").