Some *really* basic questions

[Scott Rose]

In what ways does Xenix differ from, say, System V Unix?  I notice now that
SCO has a System V lookalike as a separate product; how does this differ
from Xenix?  If vastly, what good is Xenix?  If not much, why two products?
I am only interested in answers as they relate to a 386 platform.  

I *could* be asking SCO these questions, but they have never returned a single
phone call of the many I have made to their sales department...