Connect a (Hair) Selection Tag’s Object output port to this port.
This is a Boolean value that will turn the Node on or off.
This output port can, for example, be connected with a Hair Point Node’s Index input port. Index numbers of guide points, hair points or of guides, will be output.
The setup shown below sets all guide or hair points in the Selection tag to a mass of 0.
This port outputs the number of elements selected.