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Entities  Count Departures Across the Simulation  Use the #d or
#a output signal from a block to learn how many entities have
departed (or arrived at) the block. The output signal also
indicates when departures occurred. This method of counting is
cumulative throughout the simulation. These examples use the #d
output signal to count departures:  Count Departures per Time
Instant  Suppose you want to visualize entity departures from a
particular block, and you want to reset (that is, restart) the
counter at each time instant. Visualizing departures per time
instant can help you:    • Detect simultaneous departures    •
Compare the number of simultaneous departures at different time
instants    • Visualize the departure times while keeping the
plot axis manageable  Use the Instantaneous Entity Counting
Scope to plot the number of entities that have arrived at each
time instant. The block restarts the count from 1 when the time
changes. As a result, the