We highlighted functions of ClearCase that we consider essential, although they are commonly overlooked.
In fact, precisely they build up the revolutionary aspect of ClearCase which, it has to be said, escaped even its authors.
The crux is the winkin functionality of the clearmake build tool. It was designed for performance, without anticipation that it might in fact provide a way to uniquely identify, under the control of the tool, the derived objects.
There is no point in identifying transient and private artifacts, but winkin promotes derived objects to a shared status, so that their lifetime expands and their identification suddenly makes sense: it allows users to compare results produced in similar yet ...