Traces: Each trace begins with a start event (automatically generated) Each trace contains tasks (each on a different line) And every trace finishes with an end event (also automatically generated) An empty line separates different traces Pool: Annotate tasks to place them in a pool By default tasks stay in the current pool New Pool: You can hand over the flow Pool: and come back to the original pool Gateways: To merge the control flow Same Task To split the control flow just copy paste the same task label in different traces Same Task just write a different task label in the next task Loops: If you repeat the same task label more than once Loop Body Loop Body you get a loop Message Flow (Client): //write 'send' and 'receive' in the beginning of the task label send message receive another message Message Flow (Server): //to represent tasks connected by message flow... receive message //...the name of the message should match send another message Data Flow: [input data object] data processing activity [output data object] data storage activity [db data storage element]