(AtFS) The basis of the Shape_VC toolkit. Cooperative work within projects is supported by a status model coNTrolling visibility of version objects, locking, and "long transactions" for synchronising concurreNT updates. The concept of object attributes provides a basis for storing managemeNT information with versions and passing this information between individual tools. This mechanism is useful for building iNTegrated environmeNTs from a set of unrelated tools. (2000-02-24)