This model illustrates a design pattern with rendezvous called a "write regulator." In this example, the Ramp is sending an increasing sequence of integers to the Display. However, the transfer is constrained to occur only when the Sleep actor reads inputs, because in the rendezvous domain, sending data to multiple recipients via a relation is accomplished via a multi-way rendezvous. The Sleep actor reads data, then sleeps an amount of time given by its bottom input before reading the next input data token. In this case, it will wait a random amount of time between 0 and 2 seconds (0 and 2000 milliseconds) between input readings. This has the side effect of constraining the transfers from the Ramp to the Display to occur with the same random intervals.