(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)