R.clear (); A.iteri clear_slot slot;
objs := default_objs; srcs := default_srcs; remove := default_remove;
exclude := default_exclude; net := default_net;
R.clear (); A.iteri clear_slot slot;
objs := default_objs; srcs := default_srcs; remove := default_remove;
exclude := default_exclude; net := default_net;