yes ... of course ... UML ... I said XMI as its the OMG standardised markup scheme and therefore could be easily integrated with another markup scheme using namespaces or something similar ... it would seem strange to look for a way around the common representation that could be extracted from a CASE tool Anthony ___________________________________________________________________________ Anthony Finkelstein (Prof.) | TEL: +44 (0)20 7679 7293 (Direct Dial) University College London | FAX: +44 (0)20 7387 1397 Dept. of Computer Science | EMAIL: [log in to unmask] Gower Street, | http://www.cs.ucl.ac.uk/staff/A.Finkelstein London WC1E 6BT | OFFICE: 109, Pearson Building United Kingdom | PGP Key on request ___________________________________________________________________________ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%