From http://www.urbanjost.altervista.org/LIBRARY/libGPF/EXE/ASA/srcc/asa_to_pdf.c
When you are using Microsoft Powerstation 4.0 in Powerstation 1.0 compat mode
and OPEN LPT1
or PRN
give you FILE NOT FOUND, and you have to resort to using \\.\LPT1
or \\.\PRN
which doesn't use the CARRIAGECONTROL since it's hardcoded in the older variant and instead you use NET USE LPTX to
Multi File Port Monitor which passes it to this program to make a PDF.