While in the logon screen type:

Viper-Access all the missions

While in a mission type:

	Alt+A - Show all targets on radar
	Alt+I - Invulnerable AHX-1
	Alt+J - Display the render rate (FPS)
	Alt+K - Stop smoke trails
	Alt+L - Reload weapons
	Alt+Q - Change flight model real/arcade
	Alt+R - Repair damage
	Alt+X - Crash Viper