Drawing business process diagrams can be tricky. Just getting the layout on the page to look good can be tricky. Intermediate link events can be used to clean up diagrams. They can also be used to jump from a specified point in one process to a specific point in another process.
BPMN Diagrams – Intermediate Rule Events
Business process modeling is rarely applied to simplistic processes. Real world business processes often embody complex decision making. Complex decisions imply choices of action. Rule intermediate events, in BPMN, are designed to express these hard ideas with easy to read diagrams.
BPMN Diagrams – Stop The Presses! With Intermediate Cancel Events
Business processes often need to be cancelled. An error condition can cause a process to terminate, or an incoming message can cause a process to be terminated. Error conditions occur within transactional subprocesses and a cancel intermediate event is used to describe any special cancellation steps.