The features are excellent. However, the use and variety of features described little good and understandable. One should have them by lay people write, who know what do not know the non-knower. This description has been written by experts for experts, unfortunately, is not much use. But this is an age-old problem in the manuals. The buyers are not stupid if even academics have problems. On thinking it is not so, but the writing and mediating functions. Otherwise, the device is functionally very good.
