extern bool objlist_reinsert_last(ObjList **objlist, Obj *obj);
extern bool objlist_reinsert_first(ObjList **objlist, Obj *obj);
extern bool objlist_remove(ObjList **objlist, Obj *obj);
extern bool objlist_reinsert_last(ObjList **objlist, Obj *obj);
extern bool objlist_reinsert_first(ObjList **objlist, Obj *obj);
extern bool objlist_remove(ObjList **objlist, Obj *obj);