Available when the OutputControl.Option is set to StepInterval or IterationInterval. Determines the frequency at
which restart points are generated.
For example, with a value of 2, System Coupling generates a restart point at the end
of every other coupling step or coupling iteration.
Accepts integer values greater than or equal to 1. Default value is 1.
Tip: Shown in the GUI as the Output Control | Output Frequency setting.