To delete a dividing line or the frame, do the following:
1.Click on the line or frame while holding down the SHIFT key to select the item.
2.Now choose No Line from Format[Lines] > Color.
To add a dividing line or the frame, do the following:
1.Make sure that no item in the table is selected by clicking on a point outside the table.
2.Now use your right mouse button to click on the table and select Properties.
3.In the dialog box, select the Grid Lines & Background tab.
4.Select the option corresponding to the item to be displayed.