I think I found what I’m looking for here: https://forum.dynare.org/t/problem-with-zlb-implementation/20209/24. Now my question is options_.occbin.simul.endo_init the period 0/-1 initial state? i.e., if I set it to equal the period 1 smoothed variables from calib_smoother, then my simulation is off by a period (and the smooth shocks won’t line up)?