TYPE: POP
TITLE: RBDCreate POP

The RBDCreate POP has two functions. It modifies input particles to
make them into rigid body particles. It can also create particles
using objects as templates for initial attribute values.

Parameters:
Birth
    Generation Objects  - Objects to create particles for
    Birth Time          - Time at which to birth particles
    Birth Group         - Group to contain birthed points
    Preserve Group      - Add particles to group instead of clearing group first
    *Life Expectancy    - How long the particle will live in seconds	/life
    *Life Variance      - Variance of life expectancy in seconds	/lifevar
Rigid Body
    Activation          - Turns the POP on and off		/activate
    Collision Event     - Event triggered by rigid body collisions
    Collision Group     - Group of colliding rigid body particles
    Preserve Collision Group - Do not remove entries from collision
			       group after each frame
    Exclusive Groups    - Names of groups to be used as RBD particle
                          collision groups
    Make Input Particles Rigid Bodies - Turn input particles into
                                        rigid bodies. If not set,
					input particles are not modified.
    Source Group        - Subset of points to act on
    Particle Geo        - Value for input particle instance attribute
Attributes
    Inherit Object Translation      - Set particle P to object T
    Inherit Object Rotation         - Set particle rot to object R
    Inherit Object Center of Mass   - Set particle com to object com
    Inherit Object Velocity         - Set particle v to object velocity
    Inherit Object Angular Velocity - Set particle w to object angvel
    Inherit Object Mass             - Set particle mass to object mass
    Inherit Object Bounce           - Set particle bounce to object bounce
    Inherit Object Dynamic Friction - Set particle fdynamic to object fdynamic
    Inherit Object Static Friction  - Set particle fstatic to object fstatic
Add Attributes
    Add ID Attributes          - Add ID and parent attributes
    Add Speed Attribute        - Add speed attribute (length of velocity vector)
    Add Num Hit Attribute      - Number of times collided
    Add Hit Time Attribute     - Time of collision
    Add Hit Position Attribute - Where collision occurred
    Add Hit Normal Attribute   - Normal where collision occurred
    Add Hit Force Attribute    - Force of collision 
