该程序运行后可编辑表格。在弹出的窗口中，第一排的组件是4个按钮，分别用来触发给二维表格添加行、添加列、删除行和删除列的操作。-After program run, you can edit the table. In the pomped window,there are four button on the first column ,which trigger to add columns or add lines or delete columns or delete lines.