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Ulisses Telemaco added Simple_Parallel_Composition_This_operator__.md
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## Simple Parallel Composition
This operator takes two processes and perform a parallel composition. See the Figure 01 a simple example. Unlike the serial operators - where the order of the parameters matter - the parallel operator does not take the parameters order in consideration.
Figure 02 - Parallel Composition scenario 1
In this scenario, the operator performs the following manipulations:
* step 1. create a parallel gateway
* step 2. remove the original transitions after each start event
* step 3. remove one of the start event
* step 4. connect the remain start event with the gateway created at step 1
* step 5. connect this parallel gateway with the first task of each process
* step 6. create another parallel gateway
* step 7. remove the original transitions before each end event
* step 8. remove one of the end event
* step 9. connect the last gateway created with the remain end event
* step 10. connect the last task of each process with this gateway*
When the first element after the start event of one of the process is a parallel gateway, the steps 1 is unnecessary. The same criteria is used when the element before the end event is a parallel gateway: the step s6 is not necessary
Take a look at the examples showed at Figure 2 and 3.
Figure 02 - Parallel Composition scenario 2
Figure 03 - Parallel Composition scenario 3
