Cancellation of executed operation

The cancellation of executed operation may be made by following ways:

- click again on the same icon to get it unpressed in the conforming toolbar;

- select another operation;

- at closing the corresponding task in Tools menu;

- press Ctrl + right mouse button (if  currently some object is selected  at first object deselecting (undo marking) is executed and you have to press Ctrl + right mouse button again to cancel operation);

- using pop-up menu opened by right mouse button.