2009

Interface
The user interface appears in the parameters panel, on the right side of the
Particle View dialog.
Assign Material When on, the operator assigns a material to the particles.
Default=on.
[button] Use this button to assign a material to the operator. Click the button
and then use the Material/Map Browser to choose the material. Alternatively,
drag the material from a Material Editor sample slot to the button. After you
assign a material to the operator, its name appears on the button.
Assign Material ID When on, the operator defines a material ID number for
each particle, and enables the remaining parameters. Default=on.
In general, this should remain on. Particle Flow uses the material ID with
compound materials to know which sub-material to assign to a particle.
2924 | Chapter 14 Space Warps and Particle Systems