Private File (version 1.0) is an utility by Guy Omer to convert
any file into an encrypted ASCII file (eg., 'Private File').
This program uses a 'KEY' of 0 to 32 characters and should be
very secure. It is a model 1/3/mode 3 program for most DOS's.
 
Syntax:     PRIVATE/CMD <ENTER>
 
Source: Guy Omer - sysop of 8/N/1 #001 - 904/377-1200