How to capture the parallel port's output (PRN:, LPT1:, LPT2: .. LPT9:)
On Unix and Linux systems, redirecting the print output to a file is a very easy task, but on some old DOS or Windows Console Mode applications, the programmer did not give the end user this ability.
In this case you can redirect the LPT output to a file for Printfil, even if a parallel printer is physically connected to that port (for example a Windows-only Laser printer), and even if the parallel port is not physically installed on the PC (on new machines, the parallel ports are no more included nowadays).
Printfil can capture an LPT port by using 4 different tecniques (Mode 0, 1, 2, 3) on NT-based systems (Windows NT, Windows 2000, Windows XP, Windows 2003, Windows Vista, Windows 2008, Windows 7). On Windows 95/98/ME only Mode 1 is available
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