With these functions you will be able to create simple pop-up menus
 nealy event-drive. Prepare and use them by the user are simplest.
 Proof them.

    All the system is logical based in arrays, this way you can add or
 delete items teach menu. When you add an item, this one starts as a
 selectionable item. Later the attribute of selectionare could be put or
 remove. When a line is added, the line is converted in a no selectionable
 item and continues this way during all the process.