[phenixbb] DEN Refinement in phenix 1.7.3

Dear phenixbb, I have noticed that in (since?) the latest release it is possible to activate DEN refinement in phenix.refine. I assume this refers to deformable elastic networks ­ right? What is your experience with DEN refinements ? As I could not find any reference to it in the documentation I would be happy to have feedback on when to use and when to avoid it e.g. resolution limits etc. and what to watch out for. Many thanks in advance Eike