Open source in only the literal sense of the word. It's like calling a wild boar from the midwestern coast of Africa a "Guinea pig". It's not actually lying (/pretending/cetera), since they clearly expect people to understand the distinction they're making, and so far it looks like most do, but it's still unforunately unclear (and rather needlessly so, since "source available" works just as well, if equally imprecisely).
