Sets the options when
deleting a surface flow effect. Here are the options:
Delete Surface Flow Groups
Turn on to remove the nodes
of the selected surface flow.
Remove Particles From
Surface Flow
Turn
on to remove only the particles associated with the flow and not
the flow itself.
Delete Surface Flow Particles
Turn
on to remove the particle node associated with the flow. If off
and you delete the surface flow, the particle node remains in your
scene, even though the particles disappear.
