This is the enabler for build management and for transparent (asynchronous push) distribution through MultiSite.
Contrarily to the first generation of SCM systems (SCCS, RCS) and to their sandbox model, ClearCase makes the versions available in-place (instead of in a separate repository).
As usual, collaboration is exepected from the user, and so e.g., avoid copying of either source elements and derived objects, so that their identity can be reliably controlled.
The implementation uses the concepts of view and configuration specification, as well as these of labels, and baseline.