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Navigation for Geo3d
Author: juliacr
Date written: 6/14/04
Last updated: 7/12/04

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Keyboard:

	Arrow Left: Rotate Left
	Arrow Right: Rotate Right
	Arrow Up: Move Forward (Zoom In)
	Arrow Down: Move Backwards (Zoom Out)

	Alt + Arrow Left: Move Left
	Alt + Arrow Right: Move Right
	Alt + Arrow Up: Move Up
	Alt + Arrow Down: Move Down

	Escape: Reset view to initial position
	Space: Toggles fullscreen view on/off

Mouse:
	Left Mouse button: Free Rotate
		Drag Left/Right: Rotate Left/Right 
		Drag Up/Down: Rotate Up/Down
	Middle Mouse Button/Scroll Wheel: 
		Drag Upward: Zoom In
		Drag Downward: Zoom Out
	Right Mouse Button: Free Translation
		Drag Left/Right: Move Left/Right 
		Drag Up/Down: Move Up/Down

