groups and IDs

[super gnu]

it would be very helpful to have some guides/examples/documentation on how to use the various particle selection tools in tyflow. 

looking through the operators, i see cluster ids, bind ids, particle groups, and possibly a few others.. 

however ive no idea how to use any of them, and the help files dont appear to give any suggestions.

[peshang]

they are all in example files.
fracture examples show cluster operator used in them with bind by cluster
the Physx example uses group operator.