TYPE: Object
TITLE: Null Object

The Null Object serves as a placeholder in a scene. It can be used 
to designate a location, as a look at object, or as an end affector
for an Inverse Kinematic chain.

The Null Object's transform is used to define coordinate systems in
either RIB or IFD renderings.

Parameters:

Transform
    Transform Order   - Order of transformations.
    Rotate Order      - Order of rotations.
    Translate         - Translation along xyz axes.             /tx /ty /tz
    Rotation          - Degrees rotation about xyz axes.        /rx /ry /rz
    Scale             - Non-uniform scaling about xyz axes.     /sx /sy /sz
    Pivot             - Local origin of the object.             /px /py /pz
    Scale             - Uniform scaling about xyz axes.         /scale
    Look At           - Object to point to.
    Path Object       - Object's path to be followed.
    Roll              - Object's rotation in degrees.       /roll
    Position          - Position along object path.         /pos
                        0 is the starting point and 1 is
			the ending point.  Higher/lower
			values allow multiple trips along the path.
    Orient Along Path - Orientation of camera along path
    Up Vector         - Orientation of object along     /upx /upy /upz
                        xyz axes.
    Auto-Bank Factor  - Rolls object based on path      /bank
                        curvature.  0 means off.

Render
    Display           - Whether the null object is displayed in the
		        viewport.
    Render Space      - If this parameter is turned on, then the
			transform of the null will be output to render
			scripts as a named transform space.  As well,
			the pre-include and post-include will be
			enabled for inclusion into the render stream.
			Note that the display of the object must be
			turned on and the null must match the visible
			objects of the output driver.

Misc
    Use Display Color - Use the specified display color
    Display Color     - The display color of the object.
                                                    /dcolorr /dcolorg /dcolorb
    Selecting Enabled - Object is capable of being picked in viewport.
    Select Script     - Script to run when the object is picked.
