Saitek III - Manual (Page 15)

These are the functions on the Keyboard Configuration menu:
Fire Primary Fire your primary weapon. (You start with lasers.)
Fire Secondary Fire your secondary weapon. (You start with
concussion missiles.)
Fire Flare Fire a flare to light up the area.
Cycle Primary Choose a different primary weapon. Each time you
hit this key, you'll cycle among the list of weapons
that you set on the "Weapon Selection Precedence"
screen.
Cycle Secondary Choose a different secondary weapon, cycling among
the list of secondary weapons.
Forward Move your ship forward.
Reverse Move your ship backward.
Afterburner Turn on afterburners for faster speed. Once you use
up your afterburner charge and let go of the
Afterburner key, the Pyro-GL will replenish your
afterburner charge by using energy.
Toggle Slide While this key is held down, the Turn keys will instead
cause you to slide left, right, up and down.
Slide Left Slide the ship to the left.
Slide Right Slide the ship to the right.
Slide Up Slide the ship up.
Slide Down Slide the ship down.
Pitch Up Pitch the ship upward.
Pitch Down Pitch the ship downward.
Turn Left Turn the ship left.
Turn Right Turn the ship right.
Toggle Bank While this key is held down, the Turn keys will
instead cause you to bank left and right.
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Descent ™ 3