Designer > Implementing a BPMN Task or Event in BPEL > Start End None

Start End None

BPEL Implementation: Empty or Assign
The none events are useful at the beginning and end of a control flow to indicate the boundary of the flow. The start event does not have a trigger. The end event does not have a result.
The intermediate event can be added within a control flow, such as the else if branch of an If activity.