You
can combine two or more particle streams by parenting them together.
This has two possible results depending on whether the first particle
stream ends or bounces off an object.
NoteMultiple particles
can be parented, but only in a straight line, that is, a particle
can only be the particle of one other particle. For example Particle
1 can parent Particle 2, and Particle 2 can parent Particle 3 in
the same scene.
