Serve one entity for a period of time and then attempt to output the entity through the OUT port. If the OUT port is blocked then the entity stays in this block until the port becomes unblocked. You can specify the service time, which is the duration of service, via a parameter, attribute, or signal.\n\nWhen the block permits preemption, an entity in the server can depart early via the P port. Preemption occurs only if attributes of the current entity and the entity attempting to arrive satisfy specified criteria.\n\nWhen the block does not permit preemption, the IN port is unavailable whenever this block stores an entity.
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