Attributed File System
AtFS

    (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)