This document provides an overview of various elements in BPMN 2.0 (Business Process Modeling Notation). It describes interactive user tasks such as complex user tasks, initiator user tasks, and group user tasks. It also covers notification tasks like mail, IM, call activity, SMS, and user tasks. The document lists different types of events like message, signal, timer, error, terminate, catch, throw, and boundary events. It also defines gateways such as exclusive, inclusive, event-based, complex, and parallel gateways. Finally, it mentions task types including update task, send task, receive task, manual task, service task, business rule task, and script task.
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