*/
  public void delete_lists (int list, int range) {
    RequestOutputStream o = display.out;
    synchronized (o) {
      o.begin_request (glx.major_opcode, 103, 4);
      o.write_int32 (tag);
      o.write_int32 (list);
      o.write_int32 (range);
      o.send ();
    }
  }