list* rlist =  new list;
      item* it = draw->circle(40,40,10,"-fill yellow");
      hush::item* rit = new item_srv(it);
      rlist->insert(rit);
      it = draw->circle(30,30,10,"-fill red");
      rit = new item_srv(it);
      rlist->insert(rit);
  
      hush::container* rx = new list_srv(rlist);
      list::declare("items",rx); // store server
  
      iter* riter = rlist->walk();
      iter::declare("riter",riter);