public void set_order_to()
	{
		if(Idx!=null)
			{
			if(Idx.fidx!=null)
				{
				try { Idx.fidx.close(); }
				catch (IOException e) { e.printStackTrace(); }
				}
			Idx = null;
			}
		order = "";
		if(Cdx!=null) Cdx.I = -1;
	}