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Swim lanes
: Pool, lane, dark pool; Artifacts
: Data object, group, annotation

These four categories enable creation of simple business process diagrams (BPDs). BPDs also permit making new types of flow object or artifact, to make the diagram more understandable.

Flow objects and connecting objects

Flow objects are the main describing elements within BPMN, and consist of three core elements: events, activities, and gateways.

Event

: An event is represented

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