Main comment stating the purpose of this class and relevant relationship to other classes.

Possible useful expressions for doIt or printIt.

Structure:
instVar1 type -- comment about the purpose of instVar1
instVar2 type -- comment about the purpose of instVar2

Any further useful comments about the general approach of this implementation.

	actions
	openThreeDSFile selectNewCamera selectNewCamera: switchHeadLightStatus switchRotationStatus toggleAcceleration

	change reporting
	layoutChanged

	drawing
	drawOn:

	event handling
	handlesMouseDown: mouseDown:

	initialization
	acceleratorButton initialize

	menus
	addCustomMenuItems: addCustomMenuItems:hand: headLightString rotationString yellowButtonMenu

	visual properties
	defaultColor

	accessing	top
	accelerationEnabled
	accelerationEnabled:
	scene
	scene:

	actions	top
	openThreeDSFile
	selectNewCamera
	selectNewCamera:
	switchHeadLightStatus
	switchRotationStatus
	toggleAcceleration

	change reporting	top
	layoutChanged

	drawing	top
	drawOn: Don't fill if my b3dScene does it

	event handling	top
	handlesMouseDown: Do I want to receive mouseDown events (mouseDown:, mouseMove:, mouseUp:)?
	mouseDown: Handle a mouse down event. The default response is to let my eventHandler, if any, handle it.

	initialization	top
	acceleratorButton
	initialize

	menus	top
	addCustomMenuItems:
	addCustomMenuItems:hand: Add morph-specific items to the given menu which was invoked by the given hand. This method provides is invoked both from the halo-menu and from the control-menu regimes.
	headLightString
	rotationString
	yellowButtonMenu

	visual properties	top
	defaultColor Return the default fill style for the receiver

	initialization	top
	descriptionForPartsBin If the receiver is a member of a class that would like to be represented in a parts bin, answer the name by which it should be known, and a documentation string to be provided, for example, as balloon help. When the 'nativitySelector' is sent to the 'globalReceiver', it is expected that some kind of Morph will result. The parameters used in the implementation below are for documentation purposes only!