I wrote up my feedback to the CCTS 1.8. It turns out that I am touching some of the same areas of the Core Components Metamodel that Arofan does with his RT/CCT proposal. As a result I had to roll the two proposals together. Please have a look at the attached document. It contains a revised Core Components Metamodel (figure 6.1 from The Spec). In the revision, I show (along with my proposal) Arofan's proposed reversal of the generalizaiton-specialization relationship between RT/CCT (CCT's derive from RT's -- and they do so through multiple inheritance). I didn't have time to insert Arofan's prose into this document -- I've just put a placeholder there for now. See you in 35 minutes! Regards, Bill Attachment: ccts-comments-ubl-0-1.doc Description: MS-Word document