thanks for your comment. like it very much. Yes, there are advantages, and also some disadvantages and restrictions, comparing to text coding style. Your sugg

thanks for your comment. like it very much. Yes, there are advantages, and also some disadvantages and restrictions, comparing to text coding style. Your suggestion is very great and workable I think. It is just v1.0 now. The improvement space is still very large. In coming versions, it will support drag-and-drop, drag to move items, etc.