Add Collaboration Diagram from Sequence Diagram

建议加入中文，英文，日文和其他主流语言的语言包

There could be an easier way to move around the diagram, for example when pressing a key the   The mouse would become a "hand" that would he

I'd like to design a new diagram starting from an existing one, without changing it. It should be possible to clone or "duplicate" a diagram

We can change the diagram background color, but not the editor's background color. So, it would be perfect to add this feature.

I find window position behavior very unintuitive in MacOs. I work around around it by repeatedly resizing and clicking locations at top of the frame until the window moves.

I can't create well-formed notes for nodes description because all text in the note fill one single line without lines breaking.
It will be fine to provide any hot keys for this purpose to style text.

add clear open recent

I know that the Robustness Diagram is not part of the UML. However StarUML already has the required components, less the diagram. Inclusion of a Robustness Diagram, along with the following capabilities would complete the feature. These features are as follows, 1. the ability to associate especially boundary and entity objects with classes, 2. the ability create these diagrams as a sub diagram of a use case.

I am working on a robustness diagram I would like the text form the use case displayed on the diagram so that if i make changes the documentation is synchronized with it. Hence if i could place a note component and the diagram and link it to the use case so that it shows the documentation. Also if i make changes in the note component the Documentation of the Use Case gets updated as well.

Allowing to change seq to OPT in the selected Combined Fragment

When I'm writing sequence diagrams, the editor adds a frame into the view automatically. However, I always end up deleting this frame since it prevents me from performing box selections of the sub-elements.

Dragging in the body of a frame should not cause the frame to start dragging, but instead should initiate a box selection.

If I click on "not navigable" the navigability arrow appears, and vice versa.

It would be great if there was an extension for Dart as well.

The interface looses its color when a relation is added or it can not add a color to interface when some relation exist.

When adding events and guards to statecharts using the inline textbox, the event component does not seem to appear in the edit section for the transitions. Also editting in the inline textbox for transitions usually fails ( eg guard not removed). The event-guard-effect interface needs to be simplified and less buggy.