| class  | AddRectangleCommand | This is a command class implementing command pattern. | 
| class  | AddTextMarkCommand | This is a command class implementing command pattern. | 
| class  | ChangeAlgorithmConfig | This is a command class implementing command pattern. | 
| class  | ChangeTextMarkCommand | This is a command class implementing command pattern. | 
| class  | DeleteRectangleCommand | This is a command class implementing command pattern. | 
| class  | DeleteTextMarkCommand | This is a command class implementing command pattern. | 
| class  | RequeryCommand | This is a command class implementing command pattern. | 
| class  | SelectCommand | This is a command class implementing command pattern. |