One of the more useful utilities if you use DOS a lot but hate the cursor keys. Shareware, but unfortunately I lost the documentation (or never had it, since I think I got it from a magazine and they're notouriously crap for including the docs).
Anyway, here's what you get when you start it up.
ARRow keys MOUSE v1.0 - INSTALLED
Copyright (c) 1990, Seth W. Comstock
Shareware $10.00 unregistered
Mouse movement mimics the arrow (cursor) keys
Left button = Return Right button = Esc
L + R button = F1 key Middle button = Del key
Enter "arrmouse /r" to remove (uninstall)
ARRMOUSE function restored automatically when at
the command line or use hotkeys to restore.
HOTKEYS - LEFT + RIGHT SHIFT KEYS AT THE SAME TIME