A non-javascript version of this information Compact and Narrow Notation Relational networks can be drawn in either compact or narrow notation.
Narrow notation shows greater detail.
All lines in narrow notation are one-way lines. Shown below are a few node diagrams. And These simple nodes may be assembled into nections. Some examples of nection are shown here in Compact notation. Nections are the regularly occurring modular structures in relational networks which are defined by having a central line connecting two nodes, one with upward branching, one with downward branching.