(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)