- There is a new argument, `Less`, that allows to sort the `std::set` of vertex descriptors with a deterministic sort functor. - The header `<CGAL/Mesh_3/polylines_to_protect.h>` defines and use such a functor.
- There is a new argument, `Less`, that allows to sort the `std::set` of vertex descriptors with a deterministic sort functor. - The header `<CGAL/Mesh_3/polylines_to_protect.h>` defines and use such a functor.