After examining the contents of the Parashell2.2 zip file, I discovered that the Win32 executable is compiled from Perl, since I find parashell.pl under src/Win32.
parashell.pl has a subroutine "usage" which should print out the usage and command line options. At the top there is a comment "#print usage statement if no command line parameters are passed or there is an unknown...
2009-04-18 23:30:55 UTC in parashell - Parallel Port Control