handle 1. n. In the Advanced DOS and OS/2 operating systems, a binary value created by the system… “Advanced DOS”, interesting. I think I recall hearing that w

handle 1. n. In the Advanced DOS and OS/2 operating systems, a binary value created by the system… “Advanced DOS”, interesting. I think I recall hearing that was a potential name for what eventually became OS/2 back before it was announced. But I don’t recall ever having seen IBM use that name publicly.