Article 12970 of comp.os.ms-windows.programmer.nt.kernel-mode:
Frank B. Pound wrote:
> 
> What encrypted code sequence in win.com?
> 
> I'm interested....

The test whether it's running on MS-DOS or DR-DOS. It certainly will
fail when it's DR-DOS (it took DR two weeks to release a patch, though
;-).

-- 
Bernd Paysan
"Late answers are wrong answers!"
http://www.informatik.tu-muenchen.de/~paysan/