This list originates from http://www.sarna.net/.

Cresent Hawk's Revenge - Keyboard Commands
Thanks to Tait [kjellberg@bigfoot.com]

Keyboard	Mouse		Action

up arrow	up		scrolls up
down arrow	down		scrolls down
left arrow	left		scrolls left
right arrow	right		scrolls right
any diagonal	any diagonal	scrolls diagonally
space bar/enter	left button	select
esc		right button	unselect (if no mech selected, brings up game options box)
F1				scrolls to your mech (unit 1 lance 1)
F2				scrolls to unit 2, lance 1
F3				scrolls to unit 3, lance 1
F4				scrolls to unit 4, lance 1
F5				lance 1 to control
F6				lance 2 to control
F7				lance 3 to control
F9				scrolls to visible enemy(ies)
F10				dropship controls
+				jumps among units on screen
-				jumps among units on screen
1-8				game speed settings (1 slowest-8 fastest)
ALT-S				sound control (on/off)
ALT-M				music control (on/off)
ALT-V				digitized voice control (on/off)