Inserts one or more rows in the table, below the selection. You can insert more than one row by opening the dialog (choose Table - Insert - Rows), or by selecting more than one row before clicking the icon. The second method inserts rows of the same height as the originally selected rows.
Inserts one or more columns into the table, after the selection. You can insert several columns at the same time by opening the dialog (choose Table - Insert - Columns), or by selecting several columns before clicking the icon. If the latter method is used, the columns inserted will have the same relative width as the selected columns.