System evolution by migration coordination
S. Andova, L.P.J. Groenewegen and E.P. de Vink

For Paradigm models, evolution is just-in-time modelled coordination
overlooked by a special reusable component McPal. Evolution can be treated
consistenly and on-the-fly through Paradigm's constraint orchestration, also
for originally unforeseen evolution. UML diagrams visually supplement a
migration from critical section to pipeline.