What characterizes a control node in modeling?

A control node is a specific element used in modeling, particularly in the context of activity diagrams, to manage the flow of execution within an activity. Its primary role is to determine how control passes from one part of the activity to another, ensuring that the correct sequence of actions is followed.

By directing the flow of control, the control node plays a critical function in maintaining the logical order of operations. For instance, it can be used to synchronize parallel activities, make decisions that affect which path the flow should take, or they can represent points where control is transferred between different parts of a process.

This ability to manage and direct flow is essential for effectively modeling complex processes, as it allows for a clear visual representation of how different components interact and the sequence in which actions occur. This effectiveness in controlling flow differentiates a control node from other elements that may convey different aspects, such as ownership or completion of activities.