The timestep size can now be explicitly specified (dt = init_dt) in case of resuming a simulation (restart = [1,2]) with constant timestep size (variable_dt = F). Before, the dt was always read from the restart file, which only has a practical use case for variable_dt = T, but not for variable_dt = F. The former case (variable_dt = T .and. restart = [1,2]) remains unaffected by this modification.