Opening UML diagrams
When you open a UML diagram,
it is displayed in the diagram editor. You can have multiple diagrams
open at the same time and use the tabs at the top of the editor to
navigate between them.
Procedure
To open a diagram, in the Project Explorer view,
navigate to a diagram in either the Models folder or the Diagrams
folder and double-click it.
What to do next
Tip: You can also
open UML diagrams in the Model Editor view on
the Details page.