A path is a sequence of nodes (points) connected by straight or curved segments (Figure 12-1). Each node may have either one neighboring segment (if it’s an end node) or two (if it’s a middle node); SVG does not allow you to have branching paths with more than two segments joined at the same node.
Figure 12-1. Path = nodes + segments
The length of a path is not limited; it may have anywhere from two to many thousands of nodes (although paths that are too complex are slow to render and therefore should be avoided).
It is legal to have a path with one or even zero nodes, but such a path is invisible.
With a path, you can ...