&run_control
long n_steps = 1;
double bunch_frequency = 0;
long n_indices = 0;
long n_passes = 1;
&end
n_steps -- The number of separate repetitions of the action implied by the next action command.
If random errors are defined, this is also the number of separate error ensembles.
bunch_frequency -- The frequency to use in calculating the time delay between repetitions.
n_indices -- The number of looping indices for which to expect definitions in subsequent vary_element commands. If nonzero, then n_steps is ignored.
n_passes -- The number of passes to make through the beamline per repetition.