A path is a set of nodes that can be connected with each other or not. Once rendered in 3D, the path will appear as a tubular structure resembling a tree that traverses all the connected nodes.
These nodes can be distributed within the same slice or in different slices, thus allowing the path to span multiple slices along the Z axis.
Each node defines its diameter which in turn defines the section of the path at that given point.
BioVis3D uses the icon to represent paths.
See also: Overview, Identification of objects, Drawing paths.