Usage Boolean SetUndoLevel(Short Level)
Description This method sets the level of undo.
Parameters Level Short Level of undo. This value must be between 0 and max undo level (16).
Return value TRUE on success, otherwise FALSE.
Programming Notes If Level is 0, the undo is unavailable for annotation objects. If the Level is positive you can undo annotation for Level times. This method deletes previously saved annotations for undo and resets undo method.