VDM: Origins, hopes, and achievements.- Experience using VDM in STC.- VDM in three generations of Ada formal descriptions.- Experience with VDM in NORSK DATA.- Using VDM in an Object-Oriented development method for Ada software.- The stepwise development of software development graphs — Meta-programming VDM developments.- Heap storage specification and development.- VDM as a specification method for telecommunications software.- Support environments for VDM.- Development and application of a META IV compiler.- From VDM to RAISE.- Denotational engineering or from denotations to syntax.- A type model for VDM.- A formal description of object-oriented programming using VDM.- VDM proof obligations and their justification.- Mathematical structures and their morphisms in Meta-IV.- Objectives of the British Standardisation of a language to support the Vienna development method.- Use of VDM within CCITT.- A formal semantics for a DataFlow Machine — Using VDM.- to the VDM tutorial.- Specification by data types.- Data reification and program decomposition.