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When evaluated from a Rule, Goal, or Method set, these functions are equivalent to @"Start Timestep" or @"Finish Timestep". But, for Expression Series Slots, the symbolic datetime specifications @"Start Timestep" and @"Finish Timestep" refer to the expression slot’s evaluation range, not the controller’s start or end dates. Thus, RunStartDate() may not be equivalent to @"Start Timestep" and RunEndDate() may not be equivalent to @"Finish Timestep".
But, regardless of the set from which they are called, RunStartDate and RunEndDate functions provide a fixed references to the controller’s start and end dates, respectively.
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