K			Kill target   
Shift + K  		Kill targeted sub-system
Alt + K 		10% damage to ship  
Alt + Shift + K  	10% damage to target 
C			Send message to enemies    
Shift + C		Toggle countermeasure availability for all ships 
I 			Invincibility 
Shift + I		Invincibility for target    
O			Descent-style physics    
W 			Unlimited weapons for your ship   
Shift + W 		Unlimited weapons for all ships  
G			All primary goals complete    
Shift + G  		All secondary goals complete  
Alt + G  		All bonus goals complete  
9			Move forward through secondary weapons   
Shift + 9		Move backward through secondary weapons   
0			Move forward through primary weapons   
Shift + 0		Move backward through secondary weapons   
R			Rearm request for target   

Thanks to Revolution readers Mulligan and Nancy!