## automodel.md_level — control the model refinement level

> This allows the degree of MD refinement of the models to be adjusted. You can define your own function for this purpose, set it to the special Python value `None` (in which case no additional refinement is done) or use one of the predefined functions in the `refine` module — `refine.very_fast`, `refine.fast`, `refine.slow`, `refine.very_slow` or `refine.slow_large` — which perform different amounts of MD annealing. See the `modlib/modeller/automodel/refine.py` file for more information.

> See Section 2.2.2 for an example.