# neSmiK > Noch eine Schicht mehr im Kuchen which translates roughly into: "Una altra capa al pastís" or "Yet another layer in the cake". Its main use case is to provide an interface to annotate code regions. These annotated regions then can be used with multiple backends to gain insight in application behavior. In order to use it [please check out our documentation](https://nesmik.readthedocs.io/en/latest/)