th Thisvolumecontainsthepaperspresentedatthe13 SDL Forum, Paris, France entitled "Design for Dependable Systems" and re?ects the intent to have a b- ance between experience reports and research papers related to System Design Languages. The language that was at the heart of the ?rst few SDL Forums was the ITU-T Speci?cation and Description Language de?ned in Z.100, and the app- cation domain was almost entirely ?xed-line telephone communication. Mobile...