Before revision:  This simple, generic model leads us to propose a principled method to identify  sectors, along with the magnitudes of mutational effects, from sequence data  .
After revision:  This simple, generic model leads us to propose a principled method to identify sectors, along with the magnitudes of mutational effects, from sequence data . We further demonstrate the robustness of these functional sectors to various forms of selection, and the robustness of our approach to the identification of multiple selected traits .