The anatomy of a vector illustration has an exact, finite pattern. There are only so many parts to it. Line segments with points having no control handles are straight . There is really only ONE handle per SIDE of a point because points between consecutive line segments are shared.
Objects have stroke and fill properties.
Grouped or 2. Formed into Composite Paths or 3. Open or 2. The whole purpose of this was to drive home the point that there is an anatomy to a vector illustration. It has an exact pattern.