.. TODO/Review: {{review|partial=X}}. ************* Vertex Groups ************* The Vertex groups panel allows you to specify vertex groups to use for several child particle settings. You can also negate the effect of each vertex group with the check boxes. You can affect the following attributes: Density Defines the "density" of the particle distribution. Length Defines the "length" of the particle distribution. Clump Todo. Kink Todo. Roughness 1 Uniform. Roughness 2 Random. Roughness End Endpoint. Examples ======== Todo.