Parent and Child Nodes
Each component of a rule or action is displayed as a hierarchy of parent and child "nodes".
The root node is displayed at the top, and can be considered the top-level parent node. Conditions are child nodes of this root.
Child nodes are required for some components (such as conditions) and if using Auto-Assist they will be added automatically when required (see Auto-Assist).
A comparison node with three child nodes: two values and a relationship