return param;
StringBuffer sb = new StringBuffer(); sb.append(super.paramString()); sb.append(",layout="); sb.append(layoutMgr.getClass().getName()); return sb.toString();
  protected String paramString()  {    String param = super.paramString();    if (layoutMgr != null)      param = param + ",layout=" + layoutMgr.getClass().getName();    return param;  }