The Label dialogue does this anyway. If you, at some point, change from Single label to No Label, click apply and then switch to Single Label again it has kept the previous settings. The Diagrams ...

In the example_layer_2 there is no additional text in the diagram size values, but the layer labels are still displaced by a little. In the example_layer_3 I've used separated legend items for the ...

UML diagrams are a powerful tool for software design, but they can also be confusing and inconsistent if you don't follow some basic naming and labeling conventions.

Most visual languages are not purely graphical but include textual labels to complete the picture. However, in some languages labels tend to become rather long and thereby enlarge diagrams ...