Symbols are typically used to mark interesting areas or groups of stones in the board. Commentator can then refer to these areas or groups by using symbol(s).
First start by selecting general tool , if not yet selected. Then you should select
desired positions in the board. Finally you select symbols type from menu Insert > Add
Symbol.
When symbol is visible in the board, it can be deleted by first selecting their location in
board and then pressing delete letters button in main toolbar.