[news.eclipse.modeling.mdt.uml2.uml] Frame Properties in UML Sequence Di

[Jessie Li <liz32@xxxxxxxxxxx>]

Hi All,

In UML sequence diagram, when you edit a frame, there are 5 types: alt, 
loop, opt, par, region. I know alt defines if..else; opt defines a 
guard, loop defines while. Does anyone know what are par and region?

And the sequence diagram is saved as a xml file. Is there any 
documentation about the xml file corresponding to the sequence diagram?

Thanks a lot!

-Jessie