EclipseUML Documentation
If you don't find the needed information here, you can have a look at:
Important
News about new Architecture Update:
EclipseUML 2008 is now using a new MDA core (see
more ....) .
The New Core Architecture is now based on UML IDs (EclipseUML 2008) and
not anymore on JDT IDs (EclipseUML 2007 and previous builds).
This new architecture is important for advanced MDA, DSL and UML
Modeling with a native UML 2.1 metamodel integration.