FxBreakGeometry
From Fracture FX
A fxBreakGeometry node is generated when a user selects one or more mesh nodes and from the Fracture menu clicks: Fracture > Break selected. A fxBreakGeometry is created for each mesh node. The fxBreakGeometry node is created with a child particle node.
The particle node is what represents the point cloud that is used by the voronoi algorithm to generate the fragments. Voronoi is the default