[bjenkins]

I am a heavy user of Rational Rose. One of the features I have liked about Rose is the ability to extend the model with UML2 like extensions. Specifically, I can add my own attributes to just about any modeling artifact (class, method, attribute, association, etc.) in addition to using stereotypes. This allows me to put application specific semantec meaning to my model. That coupled with the ability to read from the model programmatically allows me to create code generation tools to transform my models into applications with custom tweaks. So, my question for you is:

Does Omondo UML (any version) allow me to add arbitrary information (a la UML2) to modeling attributes and which are then available via XMI ?? or available via an API?

(otherwise it would be pretty useless if I could not obtain those custom values).