The description below is from the book DOS the Easy Way by Everett Murdock Ph.D.
CLICK HERE for information about downloading the book.
Type: External (6.0 and later)
Syntax:
FASTHELP [command]
[command] /?
Purpose: Displays a list of DOS commands with a brief explanation
of
each (new with DOS Version 6).
Discussion
The information provided in MS-DOS Help is more inclusive than that
provided by
FASTHELP, but if you just need a brief reminder, FASTHELP may be the best
choice.
Example
To display help information for the DIR command, enter