Following today's chat session, I've put the current state of the proposal for the workflow interfaces at: http://dev.zope.org/Wikis/DevSite/Projects/ComponentArchitecture/Zope3WorkflowInterfaces Please comment and amend. Florent -- Florent Guillaume, Nuxeo (Paris, France) +33 1 40 33 79 87 http://nuxeo.com mailto:fg@nuxeo.com