UNIX- Grad-daddy of all modern operating systems?

Is that true? I thought I had read that Microsoft was built on top of UNIX at
one time. What about Apple?
---------------------------------------------------
PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us
To subscribe, unsubscribe, or to change your mail settings:
http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss